Synonyms for Hammer and tongs:

• adj.

  •hard (adjective)
  • mightily,
  • as hard as possible.

• Other synonyms:

  •
  • forcefully,
  • powerfully.
  •Other relevant words:
  • heartily,
  • determinedly,
  • inflexibly,
  • in good earnest,
  • industriously,
  • decidedly,
  • eagerly,
  • heart and soul,
  • sincerely,
  • wholeheartedly,
  • effortfully,
  • perseveringly,
  • dingdong,
  • Operosely,
  • like crazy,
  • arduously,
  • earnestly,
  • resolutely,
  • manfully,
  • strongly,
  • devotedly,
  • staunchly,
  • steadfastly,
  • in all seriousness,
  • purposefully,
  • toilsomely,
  • with a will,
  • fixedly,
  • Hardily,
  • vivaciously,
  • seriously,
  • relentlessly,
  • strenuously,
  • in earnest,
  • obstinately,
  • tenaciously,
  • robustly,
  • unswervingly,
  • unyieldingly,
  • lustily,
  • laboriously,
  • firmly,
  • like mad,
  • dynamically,
  • actively,
  • briskly,
  • spiritedly,
  • persistently,
  • Stalwartly,
  • Resolvedly,
  • steadily,
  • with constancy,
  • decisively.

Antonyms for Hammer and tongs:

• adj.

  • Other antonyms:
    nonbelligerent, peaceful, halcyon, calm, peaceable, serene, nonviolent, unaggressive, pacific, tranquil.