Jisho

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Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending
1. to catch fire; to be ignited; to ignite; to light (e.g. of a match)
Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending
2. to flare up (of an emotion, controversy, etc.); to blaze; to be ignited (of a dispute, commotion, etc.); to take off (of a boom, craze, etc.)Idiomatic expression
Other forms
火が付く 【ひがつく】火が点く 【ひがつく】

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