pensive
adj.
late 14c., from Old French pensif "thoughtful, distracted, musing" (11c.), from penser "to think," from Latin pensare "weigh, consider," frequentative of pendere "weigh" (see pendant). Related: Pensively; pensiveness.
〔蒋〕[pen称量→衡量，权衡→思考，-ive形容词后缀，…的] 沉思的