裏うら付づける

う

ら

づ

け

る

Common wordFreq.FrequencyTop 50,000

Meanings

1

ichidan verb, transitive verb

support; back up; substantiate; corroborate

Used for providing evidence, data, or logical backing to a theory, claim, or statement. Common in academic, journalistic, and formal contexts.

裏うら

付づ

ける

証しょう

拠こ

は

まだ

見み

つかっ

て

い

ない

。

Evidence to back up the testimony has not yet been found.

裏うら付づけるUsage58%
Standard kanji spelling; high-frequency in news and formal writing.
裏うらづけるUsage41%
search-only kanji form
Search-only variant with づ in kana; not a standard written form.
うらづけるUsage1%

証しょう明めいする
証明する means 'to prove' in a conclusive sense, often mathematical or legal. 裏付ける is softer, meaning 'to provide supporting evidence' without necessarily being a final proof.
支ささえる
支える means 'to support' physically or emotionally. 裏付ける is specifically for supporting an argument or claim with evidence.

Compound of 裏 (ura, 'back, reverse side') + 付ける (tsukeru, 'attach'). The idea is attaching backing or support to something, hence 'to substantiate'.