П-5

ПАЛЕЦ (ПАЛЬЦЕМ, ПАЛЬЦА rare) О ПАЛЕЦ НЕ УДАРИТЬ (для кого-чего) coll, disapprov VP subj: human prep obj usu. human or collect) not to undertake any action at all (may refer to a lack of effort in reaching some goal, an unwillingness to help s.o. needing one's assistance, or a lazy, unproductive way of spending time)

X пальцем о палец не ударил (для Y-a) = X didn't lift a finger (to help Y)

X didn't do a thing (for Y) X didn't make a move (to help Y) (in refer, to an unproductive use of time only) X goofed off.

Анфиса вздохнула. Всем хорош у неё муженёк, а по дому палец о палец не ударит (Абрамов 1). Anfisa sighed. Her man was good in every way, but he didn't lift a finger around the house (1a).