• 成案せいあん

  definite plan

• 成年せいねん

  adult age, majority

• 成熟せいじゅく

  maturity, ripeness

• 成約せいやく

  conclusion of a contract

• 成算せいさん

  hope of success, prospects of success

• 成分せいぶん

  ingredient, component, composition

• 成績せいせき

  results, record, grades, marks

• 成否せいひ

  success or failure, outcome, result

• 成就じょうじゅ

  fulfillment, fulfilment, realization, realisation, completion

• 成人せいじん

  adult, grown-up

• 成功せいこう

  success, achievement

• 成果せいか

  (good) result, outcome, fruits (of one's labors), product, accomplishment

• 成長せいちょう

  growth, development, growing up, becoming an adult

• 成金なりきん

  upstart, nouveau riche, new money, new rich, coming into wealth suddenly

• 成すなす

  to form, to make, to constitute

• 成立せいりつ

  formation, establishment, materialization, coming into existence

• 成るなる

  to become, to get, to grow, to turn, to reach, to attain

• 化成かせい

  change, transformation

• 完成かんせい

  completion, perfection, accomplishment

• 大成たいせい

  completion, accomplishment, attainment of greatness or success

• 育成いくせい

  rearing, training, nurture, cultivation, promotion

• 結成けっせい

  formation, combination

• 作成さくせい

  making (a report, plan, contract, etc.), drawing up, writing out, preparing, creating (a file, website, account, etc.)

• 醸成じょうせい

  brewing, fermenting

• 混成こんせい

  mixed (e.g. team, chorus)

• 助成じょせい

  assisting, assistance, fostering, aiding

• 造成ぞうせい

  development (of land), preparation (e.g. of ground for housing), reclamation, creation

• 形成けいせい

  formation, molding, making (up), taking form, giving form to

• 既成きせい

  established, existing, accomplished, accepted, completed

• 組成そせい

  composition, constitution

• 促成そくせい

  promotion of growth

• 構成こうせい

  composition, construction, formation, makeup, structure, organization, organisation

• 編成へんせい

  composition, formation, organization, organisation, compilation

• 養成ようせい

  training, education, development, cultivation

• 平成へいせい

  Heisei era (1989.1.8-2019.4.30)

• 生成せいせい

  creation, generation, formation, derivation

• 合成ごうせい

  composition, synthesis, compounding, combining

• 達成たっせい

  achievement, attainment, accomplishment, realization

• 賛成さんせい

  approval, agreement, support, favour, favor

• 成層圏せいそうけん

  stratosphere

• 成人病せいじんびょう

  adult diseases

• 成る程なるほど

  I see, that's right, indeed

• 未完成みかんせい

  incomplete, unfinished, imperfect

• 集大成しゅうたいせい

  (large) compilation

• 好成績こうせいせき

  good results

• 不成立ふせいりつ

  failure (e.g. of a bill, motion), falling through, rejection, miscarriage

• 大成功だいせいこう

  great success, huge success

• 未成年みせいねん

  minority (i.e. being under age), minor, underage person

• 急成長きゅうせいちょう

  rapid growth

• 新成人しんせいじん

  new adult (in Japan, a person who reaches adulthood that year)