消え去る

(1)become invisible or unnoticeable; "The effect vanished when day broke"

(2)目に見えないか人目を引かなくなる

(3)get lost, as without warning or explanation; "He disappeared without a trace"

(4)道に迷う、警告あるいは説明なしで

(1)He disappeared without a trace

(2)彼は、跡形もなく姿を消した