(colloquial, idiomatic, chiefly in the negative) to be in one's right mind

(idiomatic) to be for the birds

to be on the wrong track / to be up a blind alley / to bark up the wrong tree

to be exact, to be precise; in fact

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

different strokes for different folks

(idiomatic) to be full of enthusiasm; to be keen as mustard

(idiomatic) to be on the loose

(idiomatic) to be carved in stone

(idiomatic) to be a known quantity