An Etymological Dictionary of Astronomy and Astrophysics

Manner of behaving or acting.

Etymology (EN): M.E. behavour, from behaven “to behave,” altered by model havour, from O.Fr. avoir “to have.”

Etymology (PE): Raftâr “behavior, walking, going,” from raft past tense stem of raftan “to go, walk, proceed” (present tense stem row-, Mid.Pers. raftan, raw-, Proto-Iranian *rab/f- “to go; to attack”)

• -âr prefix forming action noun.