開 — open, unfold, unseal

Readings

On'yomi came with the character from Chinese; kun'yomi is the native Japanese word it was borrowed for. A dot marks where okurigana takes over, a hyphen marks a prefix or suffix position.

On'yomi

• かい kai

Kun'yomi

• ひら.く hira.ku
• ひら.き hira.ki
• -びら.き -bira.ki
• ひら.ける hira.keru
• あ.く a.ku
• あ.ける a.keru

Words that use 開

A kanji is worth learning for the words it unlocks. These are from the JLPT vocabulary lists.

• 開く あく to open (e.g. doors) JLPT N5
• 開ける あける to open (a door, etc.) JLPT N5
• 開く ひらく to open JLPT N4
• 開始 かいし start JLPT N3
• 開会 かいかい opening of a meeting JLPT N2
• 開通 かいつう opening (of a new road, railway, etc.) JLPT N2
• 開放 かいほう opening (a door, window, etc.) JLPT N2
• 展開 てんかい development JLPT N2
• 開催 かいさい holding (a conference, exhibition, etc.) JLPT N1
• 開拓 かいたく reclamation (e.g. of wasteland) JLPT N1