before vowels Sin-, word-forming element meaning "Chinese," 1879, from Late Latin Sinæ (plural) "the Chinese," from Ptolemaic Greek Sinai, from Arabic Sin "China," probably from Chinese Ch'in, name of the fourth dynasty of China (see China).
sinker
sinkhole
sinless
Sinn Fein
sinner
Sino-
Sinologist
Sinon
Sinophobe
sinsemilla
sinter