同等|どうとうdoutou[0]heiban (flat)

1. na-adjective, no-adjectiveequality; equal; same rights; same rank; equivalence
   １メートルは１ヤードとは完全かんぜんに同等どうとうではない。↗

   A meter is not quite equivalent to a yard.

• SynonymイコールNeutralA loanword meaning 'equal' or the equals sign; in speech it can also mean 'amounts to'. 「同等」 refers to the same degree or rank.
• Synonym同格どうかくWrittenWritten word for having the same status, rank or qualifications; in grammar it also means apposition. 「同等」 stresses equal degree or value rather than standing.
• Synonym均等きんとうNeutralAbout quantities or shares being even and uniform, as in 「均等に分ける」. 「同等」 is about matching degree or standing, not even division.
• Synonym等しいひとしいNeutralAn adjective for being equal in quantity or quality; also takes the pattern 「〜に等しい」. 「同等」 mostly modifies nouns, as in 「同等の扱い」.
• Synonym等価とうかWrittenWritten word for equal value, as in 「等価交換」. 「同等」 is not limited to value; it can also cover status or ability.
• Synonym同じおなじNeutralThe everyday word for 'the same'. 「同等」 is more formal and stresses parity of degree or treatment rather than being exactly alike.
• Related同様どうようNeutralMeans 'the same as' or 'just like', as in 「前回と同様」. 「同等」 emphasizes that degree or treatment is on a par.
• Related平等びょうどうNeutralEquality in the sense of everyone being treated alike, used mainly for rights and social issues. 「同等」 means equal degree or value, without that egalitarian idea.
• Related同一どういつNeutralIdentical, one and the same, as in 「同一人物」. 「同等」 means comparable in degree; the things compared need not be the same.
• Related同然どうぜんNeutralMeans 'as good as' or 'virtually the same as', as in 「新品同然」 or 「死んだも同然」. 「同等」 carries no figurative or exaggerated flavor.
• Related同質どうしつWrittenWritten word for having the same quality or nature, i.e. homogeneous. 「同等」 is about matching degree or rank.
• Related同値どうちWrittenA mathematics and logic term for equivalence between propositions or values. In everyday speech, say 「同じ」 or 「同等」 instead.
• Related負けず劣らずまけずおとらずNeutralSays two people or things are equally good, neither inferior to the other; works in both speech and writing. 「同等」 states parity of degree or standing more neutrally.
• Antonym差別さべつNeutralTreating people differently or discriminating; the opposite of 「同等」 when it comes to treatment.
• Antonym不等ふとうWrittenWritten antonym meaning unequal or disparity, used mostly in mathematics — the direct opposite of 「同等」.

For everyday 'the same', use 「同じ」 or 「同様」. Use 「同等」 when degree, standing or treatment is on a par. For equality of rights or social treatment choose 「平等」, and for even shares or distribution 「均等」. 「同然」 covers 'as good as'. 「同一」 is identity, 「等しい」 equality in quantity, and 「等価」 equal value; 「差別」 and 「不等」 are the opposites.

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

1. 程度ていどや等級とうきゅうが同おなじであること。
2. 実質じっしつにおいて同おなじであること。等ひとしいこと。