- put one's head in the sand
- make a virtue of necessity
- err on the side of caution
- mop the floor with someone
- put one's toe in the water
- scare the bejeebers out of
- toss one's hat in the ring
- chase pennies with dollars
- toss one's name in the hat
- broaden someone's horizons
- leave someone high and dry
- take a knife to a gunfight
- leave someone in the lurch
- leave to one's own devices
- put someone in the picture
- play someone like a fiddle
- play someone like a violin
- jump down someone's throat
- stop someone in his tracks
- turn the frown upside down
- get inside someone's pants
- put the bottom rail on top
- suck all the oxygen out of
- pull the devil by the tail
- leap down someone's throat
- whistle past the graveyard
- live on top of one another
- play the hand one is dealt
- die just the way one lived
- practice what one preaches
- know a B from a battledore
- take a turn for the better
- get it through one's skull
- put the pedal to the medal
- put the pedal to the metal
- get off of someone's cloud
- set one's affairs in order
- practise what one preaches
- make like a tree and leave
- speak with a forked tongue
- squint like a bag of nails
- not do someone any favours
- have been around the block
- get one's affairs in order
- let nature take her course
- throw good money after bad
- let nature take its course
- let Nature take its course
- tend to one's own knitting
- give someone a bloody nose
- be glad to see the back of
- bet a dollar to a doughnut
- go and play in the traffic
- get one's foot in the door
- not have a leg to stand on
- give someone Hail Columbia
- not have the faintest idea
- let the cat out of the bag
- kiss the gunner's daughter
- give someone the brush-off
- get one's panties in a wad
- take leave of one's senses
- get one's shorts in a knot
- have one foot in the grave
- give someone the runaround
- have one's cake and eat it
- keep it on the barber pole
- Monday-morning quarterback
- dip one's toe in the water
- come out smelling of roses
- have one's head screwed on
- march to one's own drummer
- show a clean pair of heels
- keep one's eye on the ball
- call them as one sees them
- keep one's fingers crossed
- kick the can down the road
- have one's wicked way with
- shit in someone's Cheerios
- punch someone's lights out
- carry the world before one
- knock someone's lights out
- put a spanner in the works
- knock the daylights out of
- hear through the grapevine
- piss in someone's Cheerios
- change horses in midstream
- take someone's word for it
- have the tiger by the tail
- pop a cap in someone's ass
- see the wood for the trees
- keep to one's own knitting
- have the world by the neck
- back oneself into a corner
- have the world by the nuts
- have the world by the tail
- have the world on a string
- take the bull by the horns
- follow someone off a cliff
- put on one's dancing shoes
- put one's affairs in order
- swear on a stack of Bibles
- pull a rabbit out of a hat
Note: these words have been obtained from Wiktionary and have been classified and improved through automated computer linguistics processes.