singular, a. [unusual], unconventional, [uncommon], [strange], [peculiar], unwonted, [rare], [extraordinary], exceptional, [odd], [whimsical], [eccentric], [bizarre], [queer], [unique], unprecedented, unexampled, [curious].
singularity, n. [peculiarity], idiosyncrasy, individuality; [curiosity], [freak], [abnormality], rarity, [abnormity], queerness, [eccentricity].
sinister, a. [left]; [unlucky], inauspicious, [evil], [wrong], [forbidding].
sink, v. [subside], descend, [decline], [fall]; [immerse], [submerge], engulf, [merge].
sinker, n. plummet.
sinking, n. [subsidence], [fall], [decrease], [decline].
sinless, a. [innocent], [guiltless], undefiled, [perfect], [blameless], [faultless].
sinner, n. [wrong-doer], delinquent, miscreant, trespasser. See [wrong-doer].
siren, a. [bewitching], [fascinating], [enticing].
sister, n. Associated words: sororicide, sororize, sorosis, sororal.