Word Origin & History
snitch"informer," 1785, probably from underworld slang meaning "the nose" (1700), which apparently developed from an earlier meaning "fillip on the nose" (1676).
EXPANDsnitch1803, "to inform," from
snitch (n.). Meaning "to steal, pilfer" is attested from 1904, perhaps a variant of
snatch (v.).
COLLAPSE