可叹 kětàn lamentable Origin Definitions Defs Strokes Stroke Words Sentences Sents 可 kě adjectiveauxiliary worth worth; worthy of; used as a prefix to mean "-able" or "-worthy"叹 嘆 tàn verb to sigh (bound form) To exhale deeply to express sadness, frustration, or exhaustion; to sigh. Often used in 叹气 tànqì.