snooker

choke off crimp foil impede obstruct stall stonewall thwart

balk block confound corner crab cramp defeat mystify nonplus pigeonhole prevent puzzle shelve stump

cramp one's style cut off dead-end give the runaround hang fire hang-up hold off hold up put on back burner put on hold throw a monkey wrench into

abet advance aid assist forward help support

allow clarify clear up enlighten explain explicate let go release

encourage