Synonyms for Caustic:

• adj.

  •abrasive (adjective)
  • galling.
  •alkaline (adjective)
  • salty,
  • antacid.
  •burning, corrosive (adjective)
  • abrasive,
  • acerbic,
  • acid,
  • acrid,
  • alkaline,
  • astringent,
  • biting,
  • corroding,
  • erosive,
  • keen,
  • mordant,
  • pungent,
  • tart.
  •ironic (adjective)
  • ironic.
  •irritable (adjective)
  • acid,
  • bearish,
  • bellicose,
  • bitter,
  • cantankerous,
  • churlish,
  • crabbed,
  • cranky,
  • cross,
  • crusty,
  • huffy,
  • irascible,
  • irritable,
  • peevish,
  • petty,
  • petulant,
  • prickly,
  • snappish,
  • sour,
  • spiteful,
  • surly,
  • touchy,
  • acerbic,
  • acrimonious,
  • tart,
  • bitchy.
  •mordant (adjective)
  • mordant.
  •painful (adjective)
  • nagging,
  • stinging.
  •pungent (adjective)
  • acrid,
  • poignant,
  • pungent,
  • spicy,
  • tangy,
  • bitter,
  • piquant,
  • sharp,
  • sour.
  •sarcastic (adjective)
  • acerb,
  • acrimonious,
  • bitter,
  • cutting,
  • harsh,
  • incisive,
  • pithy,
  • rough,
  • salty,
  • satiric,
  • scathing,
  • severe,
  • sharp,
  • stinging,
  • trenchant,
  • virulent.
  •satiric (adjective)
  • satiric.
  •severe (adjective)
  • abrupt,
  • acerbic,
  • acrimonious,
  • acute,
  • ascetic,
  • astringent,
  • austere,
  • authoritarian,
  • basic,
  • bleak,
  • blunt,
  • brisk,
  • brusque,
  • censorious,
  • chilly,
  • cool,
  • correct,
  • crisp,
  • critical,
  • curt,
  • cutting,
  • demanding,
  • disciplined,
  • dour,
  • draconian,
  • dry,
  • exacting,
  • frosty,
  • fundamental,
  • grim,
  • gruff,
  • harsh,
  • hidebound,
  • icy,
  • imperial,
  • inflexible,
  • intense,
  • intolerant,
  • keen,
  • lean,
  • meticulous,
  • obdurate,
  • obstinate,
  • oppressive,
  • piquant,
  • precise,
  • prudish,
  • puritanical,
  • raw,
  • relentless,
  • rigid,
  • rigorous,
  • severe,
  • sharp,
  • short,
  • spare,
  • spartan,
  • stark,
  • stern,
  • stiff-necked,
  • strict,
  • stringent,
  • tart,
  • unbending,
  • uncompromising,
  • strait-laced.
  •sharp (adjective)
  • sharp.
  •trenchant (adjective)
  • devastating.

• n.

  •
  • accusatory,
  • accusing.
  •
  • attack,
  • mordacious,
  • respect,
  • scathing,
  • slashing,
  • trenchant,
  • truculent.
  •caustic (noun)
  • acerb,
  • acerbic,
  • acid,
  • acrid,
  • bitter,
  • blistering,
  • corrosive,
  • destructive,
  • erosive,
  • sulfurous,
  • sulphurous,
  • unpleasant,
  • venomous,
  • virulent,
  • vitriolic.
  •corrosive (noun)
  • alkaline,
  • burning.
  •sarcastic (noun)
  • sarcastic,
  • scathing.

• Other synonyms:

  •
  • ironic,
  • mordacious,
  • painful.
  •
  • abrasive,
  • scathing,
  • slashing,
  • trenchant.
  •
  • truculent.
  •
  • pointed.
  •alkali
  • alkaline.
  •harsh
  • scorching.
  •scornful
  • sarcastic.
  •trenchant
  • devastating.
  •Other relevant words:
  • abrasive,
  • abusive,
  • accusatory,
  • accusing,
  • acerb,
  • acerbate,
  • acerbity,
  • acetous,
  • acidic,
  • acidulated,
  • acidulent,
  • acidulous,
  • acrid,
  • acridity,
  • acridness,
  • acrimony,
  • agonizing,
  • alkali,
  • alkaline,
  • angry,
  • antacid,
  • antagonistic,
  • antipathetic,
  • apparatus,
  • Aqua Fortis,
  • Aqua Regia,
  • arc,
  • arcade,
  • arch,
  • arouse,
  • attack,
  • background radiation,
  • bad-tempered,
  • barbed,
  • bay window,
  • belligerent,
  • biting,
  • bitterly,
  • bitterness,
  • bitters,
  • black,
  • blistering,
  • blistery,
  • blowlamp,
  • blowtorch,
  • bluff,
  • bow,
  • bow window,
  • brand,
  • branding iron,
  • burner,
  • burning,
  • calculative,
  • captious,
  • cardioid,
  • carping,
  • carve,
  • catenary,
  • caustically,
  • cauterant,
  • cautery,
  • chemical compound,
  • choleric,
  • circle,
  • clashing,
  • coarse,
  • conflicting,
  • consuming,
  • contemptuous,
  • contumelious,
  • corroding,
  • corrosive,
  • crabby,
  • crescent,
  • crook,
  • crotchety,
  • cruel,
  • curl,
  • curmudgeonly,
  • curve,
  • cuttingly,
  • cynical,
  • deadly,
  • derisive,
  • derisory,
  • despiteful,
  • destructive,
  • devastating,
  • disagreeable,
  • discontented,
  • discourteous,
  • disdainful,
  • double-edged,
  • drastic,
  • edged,
  • edgy,
  • electrocautery,
  • elicit,
  • ellipse,
  • erosive,
  • excruciating,
  • fable,
  • falsehood,
  • festoon,
  • fiction,
  • fierce,
  • furnace,
  • gall,
  • galling,
  • gloomy,
  • grating,
  • grave,
  • grinding,
  • grouchy,
  • grumpy,
  • half-moon,
  • hard,
  • harshly,
  • hateful,
  • helix,
  • hook,
  • horseshoe,
  • hostile,
  • hot,
  • hyperbola,
  • ill-humoured,
  • ill-natured,
  • ill-tempered,
  • impatient,
  • incisive,
  • infectious,
  • injector,
  • invidious,
  • irate,
  • ironic,
  • ironical,
  • irritating,
  • irritation,
  • lamp,
  • law,
  • lea,
  • ley,
  • lively,
  • loop,
  • lunar caustic,
  • lunule,
  • lye,
  • malefic,
  • maleficent,
  • malevolent,
  • malicious,
  • malign,
  • malignant,
  • mocking,
  • mordacious,
  • mordant,
  • morose,
  • nagging,
  • nasty,
  • nitric acid,
  • painful,
  • parabola,
  • penetrating,
  • peppery,
  • peremptory,
  • perverse,
  • piercing,
  • pithy,
  • plutonium,
  • pointed,
  • poisonous,
  • pricking,
  • quarrelsome,
  • querulous,
  • quick,
  • quicklime,
  • racking,
  • racy,
  • radiation,
  • radioactivity,
  • radium,
  • radon,
  • rancorous,
  • razor-sharp,
  • repugnant,
  • resentful,
  • respect,
  • rough,
  • rousing,
  • rude,
  • salt,
  • salty,
  • sarcastic,
  • sardonic,
  • satiric,
  • satirical,
  • savage,
  • scalding,
  • scathing,
  • scorching,
  • scornful,
  • searching,
  • setup,
  • severely,
  • sharpened,
  • sharply,
  • short-tempered,
  • shrewish,
  • siding,
  • silver nitrate,
  • sinus,
  • slashing,
  • smart,
  • smart aleck,
  • sneering,
  • sore,
  • soured,
  • spiral,
  • splenetic,
  • stabbing,
  • stewing,
  • stifling,
  • stinging,
  • strident,
  • strong,
  • succinct,
  • suffer,
  • sulfurous,
  • sulky,
  • sullen,
  • sulphurous,
  • sultry,
  • taint,
  • telling,
  • terse,
  • testy,
  • torch,
  • tracery,
  • trenchant,
  • tritium,
  • truculent,
  • uncharitable,
  • uncivil,
  • unpleasant,
  • untruth,
  • uranium,
  • vault,
  • vehement,
  • venomous,
  • very fast,
  • vicious,
  • violent,
  • virulent,
  • vitriolic,
  • vitriolically,
  • vituperative,
  • warm,
  • waspish,
  • wick,
  • withering,
  • wormwood,
  • wounding,
  • Acidly,
  • Apozem,
  • Asperous,
  • Aspersive,
  • Brand iron,
  • Catacaustic,
  • Catheretic,
  • Cauter,
  • Cavilling,
  • Diacaustic,
  • Doggish,
  • Envenomed,
  • Escharotic,
  • excoriating,
  • Lituus,
  • Mordantly,
  • Moxa,
  • Rankled,
  • Resenting,
  • Ridiculing,
  • Searing,
  • Unamiable,
  • Beta rays,
  • Gamma rays,
  • red hot,
  • cosmic radiation,
  • Conchoid,
  • Pyrotic,
  • Snarling,
  • Alpha Particles,
  • embittered,
  • colliding,
  • corrosively,
  • burners,
  • snarky,
  • smart-alecky,
  • smart-mouthed,
  • set against,
  • vinegarish,
  • actual cautery,
  • amaroidal,
  • potential cautery,
  • out of temper,
  • out of humor,
  • knife-edged,
  • astringent bitters,
  • hot iron,
  • full of hate,
  • A,
  • radioactive isotopes.

Antonyms for Caustic:

• adj.

  • burning, corrosive
    bland, calm, kind, mild, nice, soothing, sweet, unsarcastic.
  • sarcastic
    dull, gentle, tasteless, stupid.
  • Other antonyms:
    affable, amusing, bland, constructive, cordial, diplomatic, droll, dulcet, genial, gentle, good-humored, good-natured, gracious, honeyed, hospitable, luscious, merry, mild, playful, pleasant, polite, saccharine, smooth, sociable, sportive, suave, sweet, urbane, waggish, Nectared.

• Other antonyms:

  • n. t.
    affable, agreeable, amusing, bland, calm, cordial, diplomatic, droll, dull, genial, gentle, good-humored, good-natured, gracious, healing, kind, loving, merry, mild, playful, pleasant, pleasing, polite, smooth, sociable, soft, soothing, sportive, suave, sweet, tasteless, temperate, unsarcastic, urbane, stupid.