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late 14c., first attested in Scottish English, apparently a dialectal variant of Scottish stob "to pierce, stab," of uncertain origin, perhaps a variant of stub (n.) "stake, nail." Figurative use, of emotions, etc., is from 1590s. Related: Stabbed; stabbing.
"wound produced by stabbing," mid-15c., from stab (v.). Meaning "a try" first recorded 1895, American English. Stab in the back "treacherous deed" is first attested 1916.
Soft; yielding and insubstantial: Support for Reagan is ''all very squooshy''
[1970s+; the date should probably be earlier; sqush, ''to collapse into a soft, pulpy mass,'' is found by 1884]