friend (v.)

in the Facebook sense, attested from 2005, from the noun. Friend occasionally has been used as a verb in English since c. 1200 (“to be friends”), though the more usual verb for “join in friendship, act as a friend” is befriend. Related: Friendedfriending. Old English had freonsped “an abundance of friends” (see speed (n.)); freondleast “want of friends;” freondspedig “rich in friends.”