How to say "unimportant" in Japanese

• マイナーCommon
  na-adjective, nounCovers 'unimportant' in the sense of minor, small-scale, or little-known: something low in importance or popularity relative to others. It comes from the loanword meaning 'minor', so it suits describing obscure or marginal people, things, or topics.
  まだまだマイナーだが、遠とおからず近隣きんりんに出荷しゅっかされるだろう。↗

  It's still minor league but in the not so distant future they'll be coming to a place near you.
• つまらないJLPT N5approx.Common
  i-adjectiveCovers 'unimportant' in the sense of insignificant or trivial — not worth attention. Its core meaning is 'boring' or 'dull', so it carries a dismissive, evaluative tone, calling the thing itself trifling rather than merely low in rank.
  あの男おとこはよくつまらぬことで誰だれにでも因縁いんねんをつける。↗

  He often uses the slightest thing as a pretext for a fight with anybody.

Use 「マイナー」 for things that are obscure or minor in a comparative, ranking sense, and 「つまらない」 for things dismissed as trivial, boring, or of little worth.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• マイナーminor
• しがないworthless
• 軽いかるいnon-serious
• つまらないinsignificant
• 端くれはしくれunimportant (person)
• 片々へんぺんinsignificant
• 人畜無害じんちくむがいhaving no influence
• つまらぬinsignificant
• つまらんinsignificant
• 小さいちいさいunimportant