1 文書を見つけるための辞書。

• betray, fail
• 裏ぎる, 見捨てる, 裏返る, 裏切る, 背く
• disappoint, prove undependable to; abandon, forsake; "His sense of smell failed him this time"; "His strength finally failed him"; "His children failed him in the crisis"
• 失望させ頼れないことを証明する