This morpheme tends to mean "condition of". Some of the most representative words that include it are: solitude, exactitude, fortitude. It's typically applied to nouns.
		
	
	
See the full list below:
- attitude
 - magnitude
 - gratitude
 - altitude
 - multitude
 - amplitude
 - solitude
 - latitude
 - aptitude
 - longitude
 - fortitude
 - ineptitude
 - rectitude
 - servitude
 - ingratitude
 - verisimilitude
 - solicitude
 - lassitude
 - exactitude
 - platitude
 - plenitude
 - decrepitude
 - certitude
 - beatitude
 - desuetude
 - finitude
 - turpitude
 - quietude
 - similitude
 - promptitude
 - etude
 - infinitude
 - disquietude
 - negritude
 - vicissitude
 - inexactitude
 - correctitude
 - inaptitude
 - pulchritude
 - torpitude
 - badassitude
 - inertitude
 - acritude
 - plentitude
 - visual magnitude
 - consimilitude
 - propositional attitude
 - humilitude
 - fleshitude
 - semiservitude
 - insuetude
 - zenitude
 - limitude
 - necessitude
 - sanctitude
 - pseudomagnitude
 - lentitude
 - crackpotitude
 - orbitude
 - mollitude
 - claritude
 - crassitude
 - inquietude
 - absolute altitude
 - habitude
 - circle of antisimilitude
 - critical altitude
 - longtitude
 - semiamplitude
 - maltitude
 - firmitude
 - perfectitude
 - inverisimilitude
 - absolute magnitude
 - definitude
 - mansuetude
 - senectitude
 - senectude
 - consuetude
 - lippitude
 - assuetude
 - unkemptitude
 - incertitude
 - signed magnitude
 - ritual servitude
 - 'tude
 - perpetude
 - anxietude
 - catitude
 - suckitude
 - millimagnitude
 - serenitude
 - asshattitude
 - parvitude
 - midlatitude
 - unitude
 - connectitude
 - punkitude
 - limpitude
 - moral turpitude
 - paleolatitude
 - étude
 - bolometric magnitude
 - dulcitude
 - unassuetude
 - dissimilitude
 - paleolongitude
 - order of magnitude
 - egritude
 - terminological inexactitude
 - jerkitude
 - pinguitude
 - radiometric magnitude
 - aegritude
 - ægritude
 - superamplitude
 - colatitude
 - colongitude
 - amaritude
 - probability amplitude
 - profunditude
 - lenitude
 - heliolatitude
 - coolitude
 - doggitude
 - wedgitude
 - heliolongitude
 - adaptitude
 - indefinitude
 - intrepitude
 - pressure altitude
 - micromagnitude
 - unquietude
 - hebetude
 - palaeolatitude
 - bialtitude
 - segnitude
 - plumptitude
 - apparent magnitude
 - abilitude
 - dickitude
 - dogitude
 - macromagnitude
 - dhimmitude
 - intestinal fortitude
 - nerditude
 - vastitude
 - spissitude
 - macritude
 - palaeolongitude
 - noun of multitude
 - acerbitude
 - aircraft attitude
 - minimum descent altitude
 - nigritude
 - minimum sector altitude
 - cattitude
 
Note: these words have been obtained from Wiktionary and have been classified and improved through automated computer linguistics processes.