by design

by design の類語

intentionally, on purpose, purposely, deliberately, advisedly, designedly, consciously, voluntarily, wittingly, in cold blood, knowingly, by choice, with purpose, with intent, with full intent, pointedly, calculatedly, purposively, willfully, with malice aforethought, purposefully, purpose

by design の反意語

accidentally, unintentionally, unconsciously, unwittingly, involuntarily

例文

• It is true that he did it, whether by accident or by design.
  偶然であれ故意であれ、彼がそれをしたのは本当だ。

by design の言い換えを探すには

by design（）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。