不詳|ふしょうfushou[0]heiban (flat)

Common
Definitions
  1. na-adjective, no-adjectiveunknown; unidentified; unspecified
Conjugation
Plain form不詳(ふしょう)
Polite (desu)不詳です(ふしょうです)
Negative (dewa nai)不詳ではない(ふしょうではない)
polite (dewa arimasen)不詳ではありません(ふしょうではありません)
Past (datta)不詳だった(ふしょうだった)
Past negative (dewa nakatta)不詳ではなかった(ふしょうではなかった)
Te form (de)不詳で(ふしょうで)
Adverbial (ni)不詳に(ふしょうに)
Conditional (nara)不詳なら(ふしょうなら)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym不明ふめいNeutralA broad word for anything unclear or undetermined, as in 「原因不明」; 「不詳」 is mostly for unknown identity, authorship, age and similar details.
  • Related名もないなもないNeutralFor nameless or obscure things, as in 「名もない花」; it stresses having no name, while 「不詳」 stresses that the details are unknown.
  • Antonym明らかあきらかNeutralThe antonym: clear, evident, plain. It stands opposite to 「不詳」 when a situation or facts are unclear.

Use 「不詳」 for unknown identity, authorship or age on records, as in 「作者不詳」「年齢不詳」. For unclear matters in general pick 「不明」; for nameless people or things use 「名もない」.

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

Japanese definitions
  1. 詳くわしくは分わからないこと。
Kanji in this word
English equivalents

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