acclaim (v.) Look up acclaim at Dictionary.com
early 14c., "to lay claim to," from Latin acclamare "to cry out at" (in Medieval Latin "to claim"), from ad "to, toward" (see ad-) + clamare "cry out" (see claim (v.)). The meaning "to applaud" is recorded by 1630s. The spelling has been conformed to claim. Related: Acclaimed; acclaiming; acclamatory.
acclaim (n.) Look up acclaim at Dictionary.com
"act of acclaiming, a shout of joy," 1667 (in Milton), from acclaim (v.).