c.1380, from O.Fr.
adulacion, from L.
adulationem (nom.
adulatio), from
aduliari "to flatter," from
ad- "to" +
ulos "tail," from PIE
*ul- "the tail" (cf. Skt.
valah "tail," Lith.
valai "horsehair of the tail"). The original notion is "to wag the tail" like a fawning dog (cf. Gk.
sainein "to wag the tail," also "to flatter;" see also
wheedle).