補

to repair / to patch / to mend / to make up for / to fill (a vacancy) / to supplement

(classical) barely / just / just now

the left-radical form of Kangxi radical 145, 衣[yi1]

to complement / to make up for a deficiency

to mend

to fill a gap / to fill in a blank (on a form) / to overcome a deficiency

to wait to fill a vacancy / reserve (candidate) / alternate / substitute

lit. to mend the pen after sheep are lost (idiom) / fig. to act belatedly / better late than never / to lock the stable door after the horse has bolted

complementary / to complement each other

lit. use others' strengths to make up for one's weak points (idiom from Mencius) / to use this in place of that / what you lose on the swings, you win on the roundabouts

to augment / to supplement / to add

(sports) injury time

waiting list

(coll.) to cover a shortfall by using funds intended for another purpose or by borrowing some money / (coll.) to snack

to overdose on supplementary medicine / to cram too hard

(after a sum has been paid in advance) to refund (in case of overpayment) or be reimbursed (in case of underpayment)

tonic / healthy concoction / (fig.) just what the doctor ordered / (Tw) pirated software

to make up for one's faults by doing good deeds (idiom)

to compensate for lack of ability through hard work (idiom)

If you don't plug the small hole, the big hole will be hard to repair (idiom); A stitch in time saves nine.

A small hole not plugged will make you suffer a big hole (idiom); a stitch in time saves nine

ammunition depot

tinker