便利使い べんりづかい Meanings Noun, する verb, Transitive using without consideration for others; using (another person, etc.) in a way that's convenient to oneself (but detrimental to the person, thing etc. being used); using in a reckless manner Kanji 便 convenience. Read as ベン. 利 benefit 使 use. Read as つかい. Jinuma: Japanese Dictionary · Word lists