when you have a moment

お手すきのときに

when you have a moment の類語

as soon as you can, as soon as possible, promptly, when convenient, at the earliest opportunity, at your earliest convenience

when you have a moment の言い換えを探すには

when you have a moment（お手すきのときに）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。