advocateyoudaoicibaDictYouDict[advocate 词源字典]
advocate: [14] Etymologically, advocate contains the notion of ‘calling’, specifically of calling someone in for advice or as a witness. This was the meaning of the Latin verb advocāre (formed from vocāre ‘call’, from which English also gets vocation). Its past participle, advocātus, came to be used as a noun, originally meaning ‘legal witness or adviser’, and later ‘attorney’.

In Old French this became avocat, the form in which English borrowed it; it was later relatinized to advocate. The verb advocate does not appear until the 17th century. The word was also borrowed into Dutch, as advocaat, and the compound advocaatenborrel, literally ‘lawyer’s drink’, has, by shortening, given English the name for a sweetish yellow concoction of eggs and brandy.
=> invoke, revoke, vocation[advocate etymology, advocate origin, 英语词源]