| backtracking |
| backwater |
| balk |
| be affected(verb, act, acknowledge, proceed, answer) |
| be at the bottom of(verb, make, open, cause, secure) |
| become less(verb, expression, drop, fall, fail) |
| become obsolete(verb, expression, decline, fall, terminate) |
| begin(verb, make, open, cause, produce) |
| behave(verb, act, acknowledge, proceed, answer) |
| boomerang(verb, act, acknowledge, proceed, answer) |
| bounce back(verb, expression, act, turn, return) |
| brainstorm(verb, make, open, cause, secure) |
| break in(verb, expression, make, open, cause) |
| break the ice(verb, expression, idiom, make, open) |
| breed(verb, make, cause, produce, create) |
| bring back(verb, expression, phrasal verb) |
| bring to pass(verb, expression, idiom, make, open) |
| call off(verb, expression, move, change, push) |
| cause(verb, make, produce, bring, initiate) |
| change position(verb, expression, move, change, push) |