let off, let slip, forgive, let off/slip, slip

to copy, to imitate, to make by imitating a model

to turn on the water, to let water out, to throw a game (sports)

seemingly

wanton, unbridled, presumptuous, impudent

traverse, impair, bar, cumber, be harmful to, trammel, encumber, sabotage, molest, obstruct, blanket, impairment, disturb, jeopardize, annoy, put in jeopardy