knowing the ins and outs (verb) know the ropes: understand the particulars of a situation
Sinonime: barefaced, bearish, blunt, blustering, breviloquent, brief, brusque,
candid, crusty, curt, direct, downright,
forthright,
frank, gruff,
hearty,
honest,
laconic, no-nonsense,
open,
outspoken, plain-spoken, rough,
rude, short, short-spoken,
sincere, snippety, snippy,
straightforward, tactless,
tart,
terse, unceremonious