Jisho

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Godan verb with ku ending, intransitive verb, Transitive verb
1. to open; to undo; to unseal; to unpack
  • せんしゅう先週
  • わたし私達
  • ぶとうかい舞踏会
  • ひら開きました
  • We gave a ball last week.
2. to bloom; to unfold; to spread out
  • にわ
  • バラ
  • つぼみ
  • すこ少しずつ
  • ひら開き
  • はじ始める
  • Little by little, the buds on the rosebush in my garden begin to open.
3. to open (for business, e.g. in the morning)
4. to be wide (gap, etc.); to widen
Godan verb with ku ending, Transitive verb
5. to hold (meeting, etc.); to give; to open
6. to found (nation, dynasty, sect, etc.); to open (a new business); to set up; to establish; to start
7. to open (ports, borders, etc.)
8. to open (an account)
9. to open up (new land, path, etc.); to clear; to developSee also 拓く
10. to open (a file, etc.)Computer terminology
11. to extract (root); to reduce (equation)Mathematics
12. to cut open (fish)Food term, as 魚を開く
13. to change (kanji into hiragana)
Godan verb with ku ending, intransitive verb
14. to flare (e.g. skirt)
15. to slacken (into a poor posture)Sports term, as 体が開く, 肩が開く, etc.

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