This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Capable of burning, corroding, dissolving, or eating away by chemical action.

adj. Corrosive and bitingly trenchant; cutting. See Synonyms at sarcastic.

adj. Causing a burning or stinging sensation, as from intense emotion: "Most of all, there is caustic shame for my own stupidity” ( Scott Turow).

n. A caustic material or substance.

n. A hydroxide of a light metal.

n. The enveloping surface formed by light rays reflecting or refracting from a curved surface, especially one with spherical aberration.

adj. Capable of burning, corroding or destroying organic tissue

adj. sharp, bitter, cutting, biting, sarcastic

n. Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

n. The envelope of reflected or refracted rays of light for a given surface or object.

n. The envelope of reflected or refracted rays for a given curve.

n. caustic soda

adj. Capable of destroying the texture of anything or eating away its substance by chemical action; burning; corrosive; searing.

adj. Severe; satirical; sharp.

n. Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

n. A caustic curve or caustic surface.

Capable of burning, corroding, or destroying the tissue of animal substances. See causticity.

Figuratively, severely critical or sarcastic; cutting: as, a caustic remark.

The curved surface to which all the rays of a conical pencil of light entering a refractive medium are tangential.

n. any chemical substance that burns or destroys living tissue

adj. harsh or corrosive in tone

adj. of a substance, especially a strong acid; capable of destroying or eating away by chemical action

"While on this subject of caustic potash, it cannot be too often repeated that _caustic potash_ is a totally different article to _caustic soda_, though just like it in appearance, and therefore often sold as such."

unpleasant    destructive    caustic soda   

acrid    acrimonious    caustic paste    green-bank caustic soda    caustic lime    cream caustic    caustic arrow    caustic liquor    caustic dart    caustic silver   

caustic surface    caustic curve    caustic soda    caustic potash    lunar caustic   

burning    corrosive    searing    severe    satirical    sharp    escharotic    catacaustic    diacaustic   

agnostic    diagnostic   

sarcastic    scathing    pungent    sardonic    satirical    corrosive    incisive    flippant    acidic    acrimonious