Synonyms for On a large scale:

• adj.

  •widespread (adjective)
  • general,
  • common,
  • comprehensive,
  • diffuse,
  • epidemic,
  • public,
  • pandemic,
  • rife,
  • universal,
  • ruling,
  • broad,
  • unlimited,
  • prevailing,
  • far-flung,
  • outspread,
  • unrestricted,
  • rampant,
  • pervasive,
  • regnant,
  • sweeping,
  • across the board,
  • far-reaching,
  • wholesale,
  • prevalent,
  • boundless,
  • wall-to-wall,
  • current,
  • all over the place,
  • popular.

• adv.

  •extremely (adverb)
  • very.
  •greatly (adverb)
  • indeed,
  • most,
  • vastly,
  • largely,
  • eminently,
  • inimitably,
  • markedly,
  • remarkably,
  • exceptionally,
  • abundantly,
  • mightily,
  • much,
  • exceedingly,
  • tremendously,
  • incredibly,
  • by much,
  • intensely,
  • powerfully,
  • incomparably,
  • notably.

• Other synonyms:

  •adj.
  • widespread.
  •adv
  • conspicuously,
  • enormously,
  • famously,
  • glaringly,
  • greatly,
  • hugely,
  • immeasurably,
  • immensely,
  • strikingly,
  • superlatively,
  • supremely,
  • surpassingly,
  • incalculably,
  • in deed,
  • in great measure.
  •adv.
  • emphatically,
  • extremely,
  • highly,
  • infinitely,
  • very much,
  • on a large scale.

Antonyms for On a large scale:

• adj.

  • widespread
    limited, local, narrow, concentrated.

• adv.

  • greatly
    unremarkably, Inconsiderably, insignificantly.