ʿāṣar עָצַר ‘to restrain’ (Hebrew)

Etymology^?: a primitive root

ʿāṣar v
1) to restrain, retain, close up, shut, withhold, refrain, stay, detain
 1a) (Qal)
  1a1) to restrain, halt, stop
  1a2) to retain
 1b) (Niphal) to be restrained, be stayed, be under restraint