| foot |
| foul up(expression, upset, check, block, obscure) |
| fox-trot |
| halt(verb, stop, close, force, restrain) |
| hang up(verb, expression, stop, hold, close) |
| hitch(noun, disorder, difficulty, weakness, restraint) |
| hold(verb, stop, fix, keep, restrain) |
| holdback |
| hustle |
| impregnate(verb, stop, close, block, top) |
| infarct(noun, obstruction, stoppage, barrier, blockade) |
| infarction(noun, obstruction, stoppage, barrier, blockade) |
| inhibition(noun, difficulty, weakness, burden, hindrance) |
| intercept(verb, stop, close, halt, prevent) |
| interfere(verb, hold, check, keep, block) |
| interference(noun, difficulty, restraint, hindrance, problem) |
| interrupt(verb, stop, break, close, check) |
| interweave(verb, upset, obscure, confuse, impede) |
| involve(verb, upset, obscure, confuse, impede) |
| jam-up(noun, difficulty, obstacle, obstruction, impediment) |