| blank(verb, cross, frustrate, thwart, baffle) |
| blast |
| block(verb, hinder, obstruct, frustrate, blank) |
| blow away(verb, expression, shock, confuse, overwhelm) |
| blow out(expression, upset, depress, extinguish, undermine) |
| blow up(expression, upset, depress, extinguish, undermine) |
| bring to grinding halt(verb, expression, idiom, destroy, halt) |
| bug(verb, upset, bother, disturb, confuse) |
| bury(verb, cross, frustrate, blank, thwart) |
| can |
| cast down(verb, expression, cross, frustrate, blank) |
| catch one short(verb, expression, idiom, upset, bother) |
| cause |
| cause setback(verb, expression, cross, frustrate, blank) |
| cause wonder(expression, confuse, alarm, confound, disconcert) |
| chagrin(verb, upset, bother, disturb, confuse) |
| challenge |
| cheat |
| chisel |
| choke off(expression, hinder, obstruct, frustrate, thwart) |