Synonyms for By design:

• adv

  •malice aforethought (adverb)
  • deliberate malice,
  • full intent.

• adv.

  •deliberately (adverb)
  • meaningfully,
  • pointedly,
  • purposively,
  • Prepensely,
  • with a view to,
  • without qualms,
  • resolutely,
  • independently,
  • with eyes wide open,
  • willfully,
  • emphatically,
  • with malice aforethought,
  • calculatingly,
  • apurpose,
  • wittingly,
  • determinedly,
  • in cold blood,
  • to that end,
  • after consideration,
  • freely,
  • voluntarily,
  • premeditatively,
  • designed.
  •designedly (adverb)
  • Purposedly,
  • calculatedly.
  •malice aforethought (adverb)
  • malice prepense.
  •on purpose (adverb)
  • of one's own free will.
  •purposely (adverb)
  • explicitly.

• n.

  •advisedly (noun)
  • advisedly.
  •by design (noun)
  • by choice,
  • on purpose,
  • intentionally.

• Other synonyms:

  •
  • intentional,
  • studiously,
  • prearranged,
  • scripted,
  • intended,
  • calculated.
  •
  • expressly,
  • willful,
  • knowingly,
  • organized,
  • deliberate,
  • consciously.
  •
  • conscious.
  •
  • voluntary.
  •
  • express.
  •Other relevant words:
  • purposefully,
  • with full intent,
  • premeditatedly,
  • wilfully,
  • purpose,
  • with intent,
  • leisurely.

Antonyms for By design:

• adv.

  • deliberately
    unintentionally, indetermindedly, unwittingly.
  • designedly
    innocently, unknowingly, unconsciously.
  • purposely
    impulsively, spontaneously.
  • Other antonyms:
    by chance, unexpectedly, circumstantially.