SOUND, n.—tone, noise, silence.
SPACE—room.
SPARSE—scanty, thin. (Luxuriant.)
SPEAK—converse, talk, confer, say, tell.
SPECIAL—particular, specific. (General.)
SPEND—expend, exhaust, consume, waste, dissipate. (Save.)
SPORADIC—isolated, rare. (General, prevalent.)
SPREAD—disperse, diffuse, expand, disseminate.
SPRING—fountain, source.
STAFF—prop, support, stay.