(figuratively) not to sleep a wink

(of food) (transitive with de) to make short work of, to eat in one go, voraciously / (figuratively) (transitive with de) to make short work of, to make mincemeat out of

(informal) to feel exhilarated; to be beside oneself with pride, to feel very proud (to the point of arrogance and haughtiness)

to make no sense, to have no rhyme or reason

no matter! no big deal! so be it! fair enough! never mind that!

(informal) not to run smoothly / (figuratively, informal) to be wrong, to be amiss / (figuratively, informal) to have a screw loose

if I'm not mistaken, unless I'm much mistaken

(formal, literary) Synonym of ne serait-ce que

(informal) to behave in a haughty, insolent, impudent, cheeky, cocky manner; to have some gall, nerve, cheek, etc.

(informal, derogatory) not to overstrain oneself, not to over-exert oneself, not to overdo it, not to wear oneself out, not to kill oneself over (something), to take it easy