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勃発 / ぼっぱつ : n vs 1）outbreak (e.g. war) 2）outburst 3）sudden occurrence
勃然 / ぼつぜん : adj-t 1）sudden 2）fit of anger
勃起 / ぼっき : n vs 1）erection (usu. penis) 2）standing erect 3）stiffening
勃興 / ぼっこう : n vs 1）sudden rise to power 2）sudden rise in prosperity
勃々 / ぼつぼつ : adj-t 1）spirited 2）rising 3）energetic
勃つ / たつ : v5t 1）to have an erection
勃勃 / ぼつぼつ : adj-t 1）spirited 2）rising 3）energetic
勇侠 / ゆうきょう : n adj-no 1）chivalry 2）bravery
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勃発

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