JMdict: 1284430

合う 【あう】

  1. [v5u,vi] to come together; to merge; to unite; to meet
  2. [v5u,vi] to fit; to match; to suit; to agree with; to be correct
  3. [v5u,vi] to be profitable; to be equitable
  4. [aux-v,v5u] to do ... to each other; to do ... together
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Fit, Suit, Join, 0.1 ゴウ, ガッ, カッ あ.う, -あ.う, あ.い, あい-, -あ.い, -あい, あ.わす, あ.わせる, -あ.わせる 2

Words often seen with this one: (experimental feature)

こと (71), この (64),  (51), 自分 (44),  (41), 思う (38), いい (37), もの (34), よく (34),  (32), それ (31), その (31),  (28), にも (25), 一番 (25), という (24), 趣味 (24), かもしれない (23), そんな (23), また (23), する (22), サイズ (22), として (21),  (21), いる (20)