akin to kopto, "to beat," and kopiao, "to be tired" (from a root kop--, "to cut"), signifies "blunted, dull," as of a weapon; hence, "blunted in tongue, dumb," Mat 9:32 etc.; "in hearing, deaf," Mat 11:5, Mar 7:32, Mar 7:37, Mar 9:25, Luk 7:22. See DUMB.