裏付け， 裏づけ， 裏付， うらづけ

1. support (e.g. for an argument), backing, proof, evidence, corroboration, substantiation, guarantee, security

tbd

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音读: リ  

训读:うら  

日检:2 grade:6 笔画数:13 部首:145

音读: フ  

训读:つ.ける  -つき  -つ.き  -づ.ける  つ.き  -つ.け  -づ.き  -づ.け  つ.く  つ.け-  つ.け  -づき  -づ.く  -つ.ける  -づけ  

日检:2 grade:4 笔画数:5 部首:9