不惮烦 bùdànfán to spare no effort Origin Definitions Defs Strokes Stroke Words Sentences Sents 不惮 不憚 bùdàn not mind (literary) to not object to; to not mind; to not spare oneself (from effort or trouble)烦 煩 fán nounverb superfluous (bound form) numerous and confusing; overly detailed or complicated, or wordy