damp (v.)youdaoicibaDictYouDict[damp 词源字典]
late 14c., "to suffocate," from damp (n.). Figurative meaning "to deaden (the spirits, etc.)" attested by 1540s. Meaning "to moisten" is recorded from 1670s. Related: Damped; damping.[damp etymology, damp origin, 英语词源]