sinister

adj. 不吉祥的，险恶的

sine die, sine qua non, sinecure, sinew, sinewy, sinful, sinfully, sing, Singapore, singe, singer, singing, single, single out, single-minded, singlet, singsong, singular, singularity, singularly, sink, sink in, sinker, sinkhole, sinking, sinking fund, sinlessness, sinner, Sino- (also sino-), sinologist, sinology, sinuosity, sinuous, sinus, sinusitis, sip, siphon, sir, sire, siren,