STEP Hebrew Lexicon: חָשַׂךְ

1) to withhold, restrain, hold back, keep in check, refrain

1a) (Qal)

1a1) to withhold, keep back, keep for oneself, keep from, hold in check, refrain, spare, reserve

1a2) to restrain, check

1b) (Niphal) to assuage, be spared