to be slow on the uptake

(idiomatic) to be in a fix; to be in trouble

you snooze, you lose: if one becomes inactive, lazy or left behind once, then one will find it all the more difficult to become active, productive or progressive again

(colloquial) strong, round buttocks / (colloquial, idiomatic, often in negation) courage; guts; balls

(idiomatic) to be on one's guard, to be on guard

on the one hand

(idiomatic) to step out of line

(idiomatic) to fall by the wayside

to run in the family

(idiomatic) to deceive