avenge oneself(settle a score)

unable to find out

not to give a definite answer

stoop to anything for sth.

never-losing

not let the grass grow under one's feet(lose no time)

mighty storm

help another for the sake of justice

show ingenuity

nopride and impatience

close the communications at the borders(lock one's doors against the world)

go away without saying goodbye(quit without notice)

be interested in charities

people like those are not lacking(quite a few such people)

collect widely all good qualities

be dependent on(be under somebody's roof)

be compelled to do sth.against one's will

duplicity(have two faces)

hide one's candle/light under a bushel(not show one's talent; be in the shade)

as expected(as might have been expected)