| A | B |
| to let up | to slacken, to lessen in intensity; to relax or ease one's effort |
| to lay off | to abstain from or reduce the amount of; to release or discharge from a job |
| to bring out | to show or introduce (to the public); to make available |
| to bring back | to return a bought or borrowed item |
| to wait up for | to wait until late at night without going to bed |
| to leave (someone or something) alone | not to disturb, to stay away from |
| let alone | and certainly not |
| to break off | to terminate, to discontinue |
| to wear off | to disappear gradually |
| to wear down | to become worn gradually through use |
| on the whole | in general, in most ways |
| touch and go | risky, uncertain till the end |