This morpheme tends to mean "relating to". Some of the most representative words that include it are: magical, comical, logical . It's typically applied to adjectives.
See the full list below:
- local
- social
- national
- general
- political
- real
- international
- special
- central
- personal
- financial
- royal
- natural
- individual
- legal
- final
- normal
- total
- industrial
- original
- professional
- traditional
- physical
- medical
- essential
- environmental
- annual
- regional
- commercial
- practical
- official
- usual
- additional
- sexual
- actual
- technical
- internal
- potential
- cultural
- formal
- rural
- initial
- substantial
- equal
- educational
- mental
- critical
- historical
- liberal
- moral
- vital
- external
- typical
- ideal
- fundamental
- crucial
- criminal
- agricultural
- unusual
- principal
- conventional
- federal
- radical
- emotional
- global
- visual
- chemical
- classical
- clinical
- constitutional
- theoretical
- residential
- musical
- psychological
- structural
- occasional
- universal
- medieval
- intellectual
- judicial
- imperial
- illegal
- informal
- experimental
- spiritual
- rational
- logical
- electrical
- mutual
- marginal
- identical
- electoral
- oral
- presidential
- controversial
- statistical
- artificial
- institutional
- biological
- functional
- mechanical
- digital
- influential
- tropical
- partial
- occupational
- vertical
- continental
- exceptional
- casual
- operational
- ideological
- technological
- provincial
- geographical
- neutral
- verbal
- empirical
- colonial
- naval
- racial
- coastal
- beneficial
- minimal
- fatal
- rival
- managerial
- loyal
- fiscal
- parental
- philosophical
- mathematical
- architectural
- manual
- spatial
- integral
- territorial
- horizontal
- causal
- dual
- ethical
- confidential
- lexical
- gradual
- vocational
- organisational
- eventual
- ministerial
- conceptual
- grammatical
- geological
- behavioural
- optional
- peripheral
- organizational
- seasonal
- optical
- proportional
- provisional
- instrumental
- terminal
- clerical
- municipal
- departmental
- contractual
- virtual
- archaeological
- trivial
- oesophageal
- nominal
- papal
- intestinal
- eternal
- magical
- divisional
- abnormal
- sociological
- surgical
- bilateral
- ecclesiastical
- factual
- superficial
- biblical
- sceptical
- cynical
- vocal
- optimal
- theological
- transitional
- ecological
- postal
- pastoral
- brutal
- procedural
- accidental
- maternal
- marital
- communal
- tribal
- numerical
- mucosal
- residual
- penal
- oriental
- thermal
- tactical
- lateral
- duodenal
- editorial
- lethal
- graphical
- hierarchical
- homosexual
- serial
- relational
- developmental
- differential
- physiological
- governmental
- dental
- unofficial
- theatrical
- conditional
- feudal
- gravitational
- continual
- distal
- multinational
- bacterial
- aerial
- temporal
- basal
- congressional
- facial
- ritual
- anal
- recreational
- focal
- reciprocal
- gastrointestinal
- abdominal
- promotional
- literal
- three-dimensional
- neural
- mystical
- economical
- martial
- irrational
- sentimental
- proximal
- pharmaceutical
- perpetual
- cerebral
- hypothetical
- renal
- fictional
- unnatural
- impersonal
- material
- sensational
- faecal
- tidal
- methodological
- rectal
- floral
- nutritional
- diagonal
- epithelial
- unequal
- contextual
- dorsal
- spinal
- dismal
- biographical
- evangelical
- conversational
- biochemical
- hysterical
- histological
- capital
- entrepreneurial
- phonological
- radial
- transnational
- textual
- viral
- anthropological
- ornamental
- oval
- rhetorical
- monumental
- heterosexual
- sequential
- metaphysical
- incidental
- ventral
- detrimental
- unconditional
- fetal
- orchestral
- perceptual
- inaugural
- unilateral
- ceremonial
- supernatural
- ecumenical
- sensual
- mortal
- bilingual
- symmetrical
- colorectal
- chronological
- remedial
- computational
- pictorial
- longitudinal
- matrimonial
- phenomenal
- botanical
- immoral
- preferential
- lyrical
- impartial
- decimal
- terrestrial
- cervical
- multilateral
- regal
- pathological
- secretarial
- interpersonal
- choral
- horticultural
- morphological
- unreal
- impractical
- habitual
- ancestral
- patriarchal
- ontological
- skeletal
- vaginal
- glacial
- primal
- nasal
- incremental
- perennial
- paradoxical
- medicinal
- familial
- immortal
- parochial
- spiral
- topical
- intentional
- unequivocal
- wholemeal
- congenital
- astronomical
- arterial
- episcopal
- elemental
- two-dimensional
- non-verbal
- prudential
- myocardial
- notional
- mythical
- suicidal
- colossal
- alphabetical
- plural
- monoclonal
- custodial
- anatomical
- meteorological
- nocturnal
- illogical
- liturgical
- intergovernmental
- audio-visual
- existential
- aboriginal
- actuarial
- genital
- tonal
- apical
- sectional
- orbital
- seminal
- epistemological
- societal
- consequential
- congregational
- herbal
- spectral
- ileal
- immaterial
- anti-social
- metaphorical
- autobiographical
- geometrical
- mediaeval
- cyclical
- paternal
- dimensional
- conical
- observational
- piecemeal
- neurological
- modal
- canonical
- pivotal
- satirical
- cylindrical
- congenial
- ducal
- dialectical
- epidemiological
- frontal
- regimental
- spherical
- geophysical
- archetypal
- unconstitutional
- cardinal
- ineffectual
- fanatical
- consensual
- radiological
- multicultural
- inspirational
- unconventional
- antral
- directional
- referential
- parietal
- maximal
- anecdotal
- genial
- torrential
- circumstantial
- proverbial
- bridal
- non-governmental
- corporal
- pre-trial
- hormonal
- banal
- celestial
- octagonal
- antenatal
- larval
- primeval
- categorical
- ephemeral
- atypical
- vibrational
- neonatal
- menstrual
- axial
- topographical
- equatorial
- zoological
- methodical
- positional
- fractional
- jurisdictional
- transcriptional
- geothermal
- experiential
- archival
- cortical
- geochemical
- temperamental
- sculptural
- nautical
- uncritical
- doctrinal
- prejudicial
- sacrificial
- perinatal
- comical
- primordial
- supranational
- bibliographical
- endothelial
- hexagonal
- problematical
- transcendental
- especial
- visceral
- fungal
- hypocritical
- adversarial
- pre-industrial
- adoral
- non-traditional
- fraternal
- attitudinal
- pedagogical
- rotational
- insubstantial
- diurnal
- instinctual
- representational
- unicameral
- stereotypical
- mythological
- pentagonal
- umbilical
- instructional
- venereal
- surreal
- asymmetrical
- elliptical
- postprandial
- factional
- petrochemical
- crustal
- situational
- chromosomal
- stratigraphical
- retinal
- equivocal
- mitochondrial
- diabolical
- non-political
- bicameral
- segmental
- navigational
- motivational
- feral
- menial
- immunological
- jovial
- colloquial
- denominational
- cosmological
- foetal
- cordial
- dictatorial
- sectoral
- triumphal
- farcical
- unintentional
- locational
- informational
- compositional
- inimical
- ethereal
- aural
- untypical
- one-dimensional
- coincidental
- cross-cultural
- algal
- socio-political
- transformational
- sinusoidal
- gastro-oesophageal
- deferential
- dynamical
- authorial
- heretical
- polemical
- confrontational
- logistical
- mercurial
- inconsequential
- unethical
- quizzical
- conspiratorial
- constructional
- baronial
- intensional
- devotional
- allegorical
- uncontroversial
- interradial
- nonsensical
- evidential
- disloyal
- phenomenological
- doctoral
- oppositional
- ironical
- puritanical
- neuronal
- microbial
- whimsical
- intercontinental
- carnal
- conjugal
- transactional
- infrastructural
- helical
- abysmal
- prenatal
- orthogonal
- intraepithelial
- apocryphal
- biomedical
- typographical
- convivial
- intraluminal
- manorial
- variceal
- lysosomal
- scriptural
- alluvial
- gestational
- cross-sectional
- epidermal
- frugal
- infinitesimal
- immemorial
- obsessional
- asexual
- ungrammatical
- aeronautical
- bisexual
- genealogical
- placental
- postnominal
- psychosocial
- adjectival
- gubernatorial
- metrical
- postnatal
- autumnal
- centrifugal
- tyrannical
- non-commercial
- virginal
- supplemental
- multilingual
- rhythmical
- apolitical
- distributional
- palatial
- quintessential
- jejunal
- bronchial
- photochemical
- coaxial
- pharmacological
- oedipal
- punctual
- arithmetical
- metallurgical
- sacramental
- microbiological
- definitional
- guttural
- dysfunctional
- unprofessional
- non-agricultural
- tangential
- neoclassical
- multiracial
- juridical
- figural
- subliminal
- monarchical
- gynaecological
- presentational
- sartorial
- judgemental
- astrological
- postdoctoral
- cranial
- proprietorial
- curatorial
- audiovisual
- ornithological
- hippocampal
- neurophysiological
- inertial
- zonal
- immunohistochemical
- filial
- hydrological
- interstitial
- antithetical
- areal
- bacteriological
- transsexual
- unemotional
- neanderthal
- serological
- extra-marital
- interactional
- generational
- teleological
- buccal
- caudal
- egotistical
- periodontal
- baptismal
- poetical
- natal
- adverbial
- medial
- magisterial
- uneconomical
- ribosomal
- matrilineal
- teetotal
- conformational
- antibacterial
- self-critical
- geomorphological
- frictional
- urethral
- electrochemical
- non-essential
- intraperitoneal
- indexical
- antisocial
- propositional
- inferential
- bestial
- providential
- subnormal
- equilateral
- textural
- amoral
- interdepartmental
- polygonal
- bidirectional
- binomial
- depositional
- paraprofessional
- pleural
- basolateral
- patrilineal
- vestigial
- pyramidal
- infernal
- fantastical
- unexceptional
- arboreal
- unidirectional
- anorectal
- diarrhoeal
- fractal
- extraterrestrial
- hydrothermal
- subtropical
- inspiral
- mayoral
- corporeal
- unsocial
- inquisitorial
- sentential
- interglacial
- triennial
- prenominal
- alchemical
- monolingual
- parenteral
- astral
- apsidal
- regnal
- extensional
- electrophysiological
- non-professional
- pronominal
- intergenerational
- mineralogical
- contrapuntal
- toroidal
- combinatorial
- aetiological
- penitential
- glial
- non-fatal
- directorial
- haematological
- homicidal
- attentional
- hemispherical
- ambassadorial
- philological
- effectual
- subcultural
- multidimensional
- enteral
- sacral
- hiatal
- nodal
- centesimal
- clausal
- funereal
- reverential
- ultrastructural
- primatial
- nuptial
- postural
- postcranial
- gestural
- encyclical
- non-consensual
- intertidal
- comital
- polyclonal
- littoral
- extrajudicial
- paranormal
- analogical
- judgmental
- sub-tropical
- paramedical
- extracorporeal
- histopathological
- transracial
- multifactorial
- criminological
- uncongenial
- faunal
- collegial
- occipital
- non-sexual
- premarital
- syntactical
- postclassical
- prototypical
- bi-annual
- coronal
- conjectural
- malarial
- senatorial
- intraoesophageal
- non-denominational
- menopausal
- sidereal
- detrital
- chordal
- pathophysiological
- palaeontological
- laryngeal
- microscopical
- psychoanalytical
- peritoneal
- subcortical
- tracheal
- counterfactual
- non-rational
- periglacial
- cantonal
- psychical
- armorial
- fluvial
- topological
- epidural
- erosional
- gastroduodenal
- libidinal
- retroviral
- subclinical
- gonococcal
- translational
- etymological
- ordinal
- branchial
- circumferential
- semi-official
- bipedal
- interfacial
- motional
- vertebral
- correctional
- petrological
- sepulchral
- antimicrobial
- extraintestinal
- atrial
- art-historical
- inguinal
- gladiatorial
- non-lexical
- unsentimental
- corneal
- arbitral
- semi-professional
- piratical
- ileoanal
- matriarchal
- neuropsychological
- premenstrual
- artefactual
- transcontinental
- venal
- genocidal
- anticlerical
- intracranial
- sessional
- atlantoaxial
- conflictual
- maniacal
- climatological
- subaerial
- confederal
- torsional
- vegetal
- ethological
- labial
- pontifical
- atonal
- streptococcal
- mycobacterial
- collocational
- prepositional
- colloidal
- adrenal
- geopolitical
- clonal
- lithological
- perspectival
- biannual
- illiberal
- intercommunal
- non-trivial
- concessional
- preclinical
- humoral
- perineal
- cytological
- valuational
- sedimentological
- sociocultural
- curial
- contralateral
- arsenical
- bi-directional
- configurational
- boreal
- inflectional
- ahistorical
- strategical
- trilateral
- millesimal
- mesenchymal
- intonational
- caecal
- biophysical
- vegetational
- commonsensical
- terminological
- catarrhal
- animal
- ideational
- intramural
- notational
- geotechnical
- semi-natural
- foveal
- dermatological
- professorial
- psychophysical
- intersegmental
- parenthetical
- antimalarial
- vagal
- adverbal
- antiviral
- semi-annual
- typological
- archiepiscopal
- occidental
- quantal
- stromal
- centripetal
- dialectal
- anti-intellectual
- mutational
- tautological
- mission-critical
- unoriginal
- neurosurgical
- post-medieval
- cerebrospinal
- decennial
- pharyngeal
- intertemporal
- extramural
- gastrooesophageal
- unhistorical
- lineal
- tubal
- processional
- scribal
- chiral
- multifunctional
- endometrial
- suboptimal
- sternal
- perianal
Note: these words have been obtained from Wiktionary and have been classified and improved through automated computer linguistics processes.