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spare 
  adj 
1 additional, emergency, extra, free, going begging, in excess, in reserve, leftover, odd, over, superfluous, supernumerary, surplus, unoccupied, unused, unwanted 
2 gaunt, lank, lean, macilent  (rare) meagre, slender, slight, slim, wiry 
3 economical, frugal, meagre, modest, scanty, sparing 
4 go spare   (Brit. slang) become angry, become distracted, become distraught, become enraged, become mad  (informal) become upset, blow one's top  (informal) do one's nut  (Brit. slang) go mental  (slang) go up the wall  (slang) have  or  throw a fit  (informal) 
  vb 
5 afford, allow, bestow, dispense with, do without, give, grant, let (someone) have, manage without, part with, relinquish 
6 be merciful to, deal leniently with, go easy on  (informal) have mercy on, leave, let off  (informal) pardon, refrain from, release, relieve from, save from 
 
Antonyms  
,   adj 
1 allocated, designated, earmarked, in use, necessary, needed, set aside, spoken for 
2 corpulent, fat, flabby, fleshy, generous, heavy, large, plump 
  vb 
6 afflict, condemn, damn, destroy, hurt, punish, show no mercy to