Jisho

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Noun, Suru verb, Intransitive verb
1. development; growth; expansion; extension; flourishing​
  • かれ彼ら
  • は
  • まち町
  • の
  • はってん発展
  • に
  • おお大いに
  • こうけん貢献
  • して
  • くれる
  • だろう
  • 。
They will contribute greatly to the growth of the town.
Noun, Suru verb, Intransitive verb
2. development (of a situation, story, etc.); advancement; progression; unfolding​
  • わたし私達
  • の
  • かんけい関係
  • が
  • はってん発展
  • する
  • こと
  • を
  • きぼう希望
  • しています
  • 。
I hope to see our relationship expand.
Noun, Suru verb, Intransitive verb
3. playing around (sexually; esp. of a male homosexual); having an active sex life​See also 発展場
Place
4. Hatten​

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