ふく 膨らむ Common word JLPT N2 Wanikani level 54 Show inflections LinksSentence search for 膨らむSentence search for ふくらむSentence search for 脹らむKanji details for 膨Edit in JMdict Godan verb with 'mu' ending, Intransitive verb1. to expand; to swell (out); to get big; to become inflatedOther forms脹らむ 【ふくらむ】Notes脹らむ: Rarely-used kanji form. Discussions Log in to talk about this word.