timid
adj.
1540s, from Middle French timide "easily frightened, shy" (16c.) and directly from Latin timidus "fearful, afraid, cowardly," from timere "to fear," of uncertain origin. Related: Timidly; timidness.
〔李〕a. 胆怯的 [tim =to fear] ←-id [L] 表示“有⋯性质的”