Г-7

ГАЙКА СЛАБА у кого highly coll Invar VP subj. with copula usu. pres usu. used with infin) s.o. lacks the ability, energy, willpower etc (to undertake or accomplish sth. ): гайка у X-a слаба (сделать Y) - X doesn't have it in him (to do Y) X doesn't have what it takes (to do Y) X isn't made of the right stuff (in limited contexts) X doesn't have the guts (to do Y) X isn't man (woman) enough (to do Y).