Synonyms for Forget it:

• adj.

  •impossible (adjective)
  • insurmountable.
  •insurmountable (adjective)
  • indomitable,
  • impregnable,
  • overwhelming,
  • Unmasterable,
  • ineluctable,
  • no-win,
  • impassable,
  • inaccessible,
  • unbeatable,
  • forget it,
  • not a prayer,
  • invincible,
  • hopeless,
  • unconquerable,
  • insuperable,
  • no way.
  •trifling (adjective)
  • inconsiderable,
  • Loitering,
  • puny,
  • empty,
  • vain,
  • inconsequential,
  • negligible,
  • petty,
  • minuscule,
  • niggling,
  • dinky,
  • small,
  • hollow,
  • vapid,
  • measly,
  • frivolous,
  • inane,
  • idle,
  • insipid,
  • unimportant,
  • slight,
  • silly,
  • tiny,
  • picayune,
  • banal,
  • valueless,
  • shallow,
  • trivial,
  • jejune,
  • paltry,
  • nugatory,
  • piddling.

• adv.

  •never (adverb)
  • don't hold your breath,
  • not under any condition,
  • not at all,
  • not in the least,
  • at no time,
  • nevermore,
  • not in any way,
  • not ever,
  • not on your life.

• interj.

  •you're welcome (interjection)
  • no problem,
  • it's nothing,
  • no worries,
  • you are welcome,
  • my pleasure.

• n.

  •negation (noun)
  • converse,
  • nonexistence,
  • opposition,
  • Negatory,
  • disclaimer,
  • renunciation,
  • counterpart,
  • antithesis,
  • proscription,
  • reverse,
  • Non-existence,
  • no,
  • vacuity,
  • nothingness,
  • nullity,
  • NOS,
  • nullification,
  • Contraries,
  • refusal,
  • Gainsaying,
  • disavowal,
  • inverse,
  • disavowals,
  • void,
  • contrary,
  • veto,
  • neutralizations,
  • cancellation,
  • inverses,
  • blank,
  • repudiation,
  • opposite,
  • neutralization,
  • rejection,
  • antonym.

• v.

  •cancel, revoke (verb)
  • nullify.
  •nullify (verb)
  • annul,
  • kill*,
  • abate,
  • counteract,
  • countervail,
  • take out*,
  • repeal,
  • limit,
  • confine,
  • renig,
  • compensate,
  • wipe out,
  • vitiate,
  • stamp out,
  • restrict,
  • rescind,
  • trash*,
  • neutralize,
  • quash,
  • counterbalance,
  • Disannul,
  • squash,
  • invalidate,
  • ax,
  • undo,
  • offset,
  • renege,
  • wash out,
  • scratch*,
  • nig,
  • scrub,
  • abolish,
  • call all bets off,
  • torpedo,
  • zap,
  • negate,
  • bring to naught,
  • render null and void,
  • blue pencil,
  • annihilate,
  • abrogate.
  •retract (verb)
  • disown,
  • call off,
  • exclude,
  • renounce,
  • back out of,
  • eliminate,
  • recall,
  • countermand,
  • disclaim,
  • back,
  • withdraw,
  • revoke,
  • draw in,
  • pull back,
  • recede,
  • retrograde,
  • eat one's words,
  • deny,
  • take in,
  • pull in,
  • back off,
  • recant,
  • cancel,
  • reel in,
  • change one's mind,
  • sheathe,
  • forswear,
  • unsay,
  • back down,
  • retreat,
  • abjure,
  • have change of heart,
  • fall back,
  • disavow,
  • repudiate,
  • go back on,
  • welsh,
  • Retrocede,
  • suspend,
  • rule out.
  •take back (verb)
  • reclaim,
  • backpedal,
  • repossess.

• Other synonyms:

  •
  • hush.
  •
  • cheer up.
  •
  • get over.
  •
  • all-right.
  •Other relevant words:
  • let it go,
  • abandon,
  • let slip,
  • forget,
  • ignore it,
  • no matter,
  • dismiss,
  • brush aside,
  • drop it,
  • shrug off,
  • skip it,
  • thrust aside,
  • take back,
  • not much,
  • retract,
  • push aside,
  • turn away from,
  • fat chance,
  • nix,
  • brush off,
  • let it pass,
  • Nope,
  • put aside,
  • never mind,
  • think nothing of,
  • lay aside,
  • sneeze at,
  • nothing doing.

Antonyms for Forget it:

• adj.

  • insurmountable
    attainable, possible, surmountable, beatable.
  • trifling
    important, useful, worthwhile, significant.

• adv.

  • never
    always, forever.

• n.

  • negation
    approval, allowance, permission.

• v.

  • nullify
    affirm, sanctify, validate, pass.
  • retract
    corroborate, reaffirm, repeat, emphasize.