1 extra, surplus, supernumerary, auxiliary, supplementary, additional; odd, leftover; in reserve, in addition:
We got a puncture, so Dad stopped and put on the spare wheel. Give them the spare room. Have you a spare cigarette?
2 unoccupied, leftover, leisure, free, surplus, extra; not spoken for:
Her demanding job left her very little spare time.
3 thin, skinny, scrawny, cadaverous, gaunt, raw-boned, meagre, gangling, lank(y), wiry, slim, slender; all skin and bones:
The spare, ragged figure crouched in the shadows, his hand outstretched in supplication.
5 meagre, frugal, small, skimpy, modest, scanty:
Their meals were spare but wholesome.
6 save, rescue, deliver, redeem:
Bill spared me from a fate worse than death. Spare me the embarrassment of having to ask for my money back.
7 pardon, let go, release, have mercy on, let off, free, liberate:
At the last moment, the judge spared him.
8 allow, relinquish, let go (of), give, award, bestow, let have, donate, part with, give, yield:
She decided she could spare a couple of pounds for the disaster appeal. Buddy, can you spare a dime?
9 avoid, dispense with, manage or do without, give up, forgo, forsake, surrender, sacrifice:
We spared a great deal of trouble by settling the dispute. Spare the rod and spoil the child.