Part of speech: adverb
1. immediately; at once; 2. quickly, promptly (also édre)
Etymology
[← Prot-Germ *ēdraz; O Fris ēdre adv “quickly; soon”; O Sax ādro adv “early”; OHG ātar a “quick”; O Icel áðr adv “early” (Mod Icel áður)]