Open main menu


Etymology 1Edit

For pronunciation and definitions of あく – see the following entries.
[noun]evil, wickedness
[affix]evil, vice, ill, wrong
[affix]bad; disagreeable; unpleasant; undesirable;
[affix]inferior; ugly
[affix]fierce; vicious
[affix]grip; hold
(This term, あく, is the hiragana spelling of several Sino-Japanese terms.)
For a list of all kanji with on'yomi あく, not just those used in Sino-Japanese terms, see Category:Japanese kanji with on reading あく.

Etymology 2Edit

Alternative spelling 灰汁
  This entry lacks etymological information. If you are familiar with the origin of this term, please add it to the page per etymology instructions, or discuss it at the Etymology scriptorium.



あく (rōmaji aku)

  1. lye, scum
    • 905914, Kokin Wakashū (book 19, poem 1044)
       (くれなゐ) ()めし (こころ)もたのまれず (ひと)あくにはうつるてふなり
      kurenai ni someshi kokoro mo tanomarezu hito o aku ni wa utsuru chō nari
      (please add an English translation of this example)
      [Note: This aku also puns to verb 飽く (aku, to tire of).]
  2. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.

Etymology 3Edit

Various kanji readings.


あく (godan conjugation, rōmaji aku)

  1. 開く: open, burst
  2. 空く: vacant, empty
  3. 明く: open, available, free
  4. 飽く, 厭く, 倦く: tire of

Proper nounEdit

あく (rōmaji Aku)

  1. 亜久, 阿久, , , 安久, 吾久: a surname
  2. 愛玖, 愛紅: a female given name


  1. ^ 2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, →ISBN