一色
  いっしょく
  いっしき
  ひといろ
  adjectival nouns or quasi-adjectives (keiyodoshi)
  noun (common) (futsuumeishi)
  one color
  one colour
  one article
  monochrome
  same tendency
  everyone being caught up in the same thing
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  一食
  いちじき
  いっしょく
  noun (common) (futsuumeishi)
  one meal (a day)
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