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benumb (v.)[benumb 词源字典]: late 15c., from be- + numb. Originally of mental states; of the physical body from 1520s. Related: Benumbed; benumbing.[benumb etymology, benumb origin, 英语词源]
clumsy (adj.): 1590s, "acting as if benumbed," alteration of Middle English clumsid "numb with cold" (14c.), past participle of clumsen "to benumb, stiffen or paralyze with cold or fear," from a Scandinavian source akin to Old Norse klumsa "make speechless, palsy; prevent from speaking," intensive of kluma "to make motionless." For insertion of -s-, see flimsy.

Not in general use until 18c., with senses "manifesting awkwardness; so made as to be unwieldy." Related: Clumsily; clumsiness. Compare Swedish dialectal klummsen "benumbed with cold," Norwegian klumsad (past participle) "speechless, palsied by a spasm or by fear or witchery;" German verklammen "grow stiff or numb with cold." Also compare clumse (n.) "a stupid fellow."
torpid (adj.): 1610s, "benumbed, without feeling or power," from Latin torpidus "benumbed, stupefied," from torpere "be numb or stiff" (see torpor). Figurative sense of "sluggish, dull, apathetic" is from 1650s. Related: Torpidly; torpidness.