adjective, dop·i·er, dop·i·est. Informal. 1.stupid; inane: It was rather dopey of him to lock himself out.
2.sluggish or befuddled from or as from the use of narcotics or alcohol.
Also, dop·y.
Origin: 1895–1900, Americanism;
dope +
-y1 Related forms dop·i·ness, dop·ey·ness, noun