(idiomatic) to be at one's wits' end

(regional, Bavaria, Austria) (idiomatic) not be naive, to have experience.

(idiomatic) to be cut from the same cloth

(idiomatic) to tip the scales

(idiomatic) too good to be true

(idiomatic) to get up on the wrong side of the bed

(idiomatic) to indulge, to let oneself go, especially to revel, to have a good time with food, drink and merriment

(idiomatic) One must experience something to understand it properly. (But sometimes used without context merely for comedic effect.)

inflection of seiner:
/ inflection of seiner:

inflection of sein:
/ inflection of sein: