Japanese word

同一

Pronunciation

Romajidōitsu

Meaning

  • na-adjectivesame

Example

二つの書類は同一です。futa tsu no sho rui wa dō itsu de su

The two documents are the same.

Illustration for 同一 (same)

More examples

両社は同一の方針を採用しています。ryō sha wa dō itsu no hō shin o sai yō shi te i ma su

The two companies are adopting the same policy.

Core concept

Describes two or more things as matching in identity or characteristics, with no relevant difference between them.

Common phrases

  • 同一人物dō itsu jin butsu

    the same person

  • 同一の住所dō itsu no jū sho

    the same address

  • 同一の内容dō itsu no nai yō

    the same content

Similar words

同じonaji: Describes two or more things as identical or alike in quality or condition in everyday speech.
一緒issho: Describes things as being together or matching in a particular respect.
同様dōyō: Describes a similar manner, condition, or degree without requiring exact identity.
同然dōzen: Describes something as nearly equivalent in status, result, or effect.

Definition in Japanese

二つ以上の物事が、性質や内容などにおいて全く同じであるさま。futa tsu i jō no mono goto ga sei shitsu ya nai yō na do ni o i te matta ku ona ji de a ru sa ma

Word origin

同一 (dōitsu) is a Sino-Japanese compound of 同 (dō, "same") and 一 (itsu, "one"), expressing the idea of being one and the same.

Usage tips

  • In formal Japanese, 同一 (dōitsu) often describes exact identity, while 同じ (onaji) is more common in everyday conversation.

Other meanings

  • identicalna-adjective

Opposites

Related words

  • 同一視dōisshiequatingnoun
  • 同一性dōitsuseiidentitynoun
  • 同一化dōitsukaidentificationnoun

Word lists with this word