laboriously

苦心して,骨をおって;精を出して

laboriously の類語

the hard way, with effort, heart and soul, hard, with a will, diligently, hardly, tooth and nail, energetically, strenuously, hammer and tongs, manfully, painfully, relentlessly, industriously, arduously, fervently, with difficulty, tirelessly, with much ado, assiduously, zealously, difficultly, vehemently, indefatigably, onerous, mightily, ardently, sedulously, unsparingly, onerously

laboriously の言い換えを探すには

laboriously（苦心して）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。