JMdict: 1165970

いちばん 【いちばん】

  1. [n,adj-no] number one; first; first place
  2. [adv] best; most
  3. [n] game; round; bout
  4. [adv] as a test; as an experiment; by way of experiment; by way of trial; tentatively
  5. [n] song (e.g. in noh); piece
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Words often seen with this one: (experimental feature)

こと (810), この (693),  (631), いい (530), 好き (468), それ (410), 自分 (314),  (307),  (285),  (264), その (243), 大事 (236), 世界 (227),  (223), もの (215), オレ (213), という (207), 思う (207), やっぱり (202),  (198), お前 (197), 大切 (192),  (182), いる (172), なる (166)