Definitions: (1) easily instructed; teachable; biddable; (2) easily led or managed; tractable
Derivation: Latin, “to teach,” “to be fitting”
Too Far: wimpy
Quote: Natural selection shaped the human brain to be drawn toward aspects of nature that enhance our survival and reproduction, like verdant landscapes and docile creatures.— Paul Bloom (1963-) Canadian-American psychologist
Comment: When you are trying to learn something it is best if you are docile; that is to say, being attentive helps you be more open to new information.