1. formic acid

noun. A colorless pungent fuming vesicatory liquid acid HCOOH found naturally in ants and many plants or made catalytically from carbon monoxide and steam; used in finishing textiles and paper and in the manufacture of insecticides and fumigants.
Synonyms
acid
Antonyms
pleasant sweet
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2. battery-acid

noun. Street name for lysergic acid diethylamide.
Synonyms
loony toons pane back breaker dose dot Elvis Lucy in the sky with diamonds superman lysergic acid diethylamide LSD window pane acid Zen
Antonyms
bring to follower pleasant sweet alkaline

3. acid-tasting

adjective. Having a sour acidic taste.
Synonyms
tasty sour-tasting
Antonyms
tasteless unappetizing sour

4. acid-fast

adjective. Not easily decolorized by acid solutions; pertains to micro-organisms (especially the tubercle bacillus that causes tuberculosis).
Synonyms
impervious imperviable
Antonyms
pervious permeable receptive

5. acid-wash

verb. Wash with acid so as to achieve a bleached look.
Synonyms
wash launder
Antonyms
dirty handwash machine wash

6. acid

noun. (ˈæsəd) Any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt.
Synonyms
citric acid sulfonic acid triphosphoric acid 2-methylpropenoic acid hydroxybenzene cyanic acid oil of vitriol fluoroboric acid nitrous acid sulfanilic acid PABA isocyanic acid Prevacid gamma acid perchloric acid pectic acid hydrochloric acid hydrogen chloride chemical compound hypochlorous acid pantothenic acid aminobenzoic acid glycollic acid ferrocyanic acid methacrylic acid glyceric acid dichromic acid iodic acid chlorous acid manganic acid oxalacetic acid gallic acid aqua regia boracic acid pyruvic acid orthoboric acid arsenic acid fluosilicic acid hydroxy acid selenic acid picric acid carboxylic acid thiocyanic acid hydrofluoric acid titanic acid hydriodic acid lysergic acid chromic acid silicic acid hydroxyacetic acid fumaric acid sulphonic acid oxygen acid hexacosanoic acid monobasic acid uric acid alkapton hydrobromic acid alcapton glycolic acid homogentisic acid formic acid tetrabasic acid toluic acid chlorohydric acid itaconic acid xanthic acid hydroiodic acid nitric acid para aminobenzoic acid barbituric acid aqua fortis chloric acid pantothen cyanamide lansoprazole fulminic acid carbolic acid prussic acid malonylurea nitrohydrochloric acid phenol phthalic acid hydrofluosilicic acid maleic acid vitriol cerotic acid compound ferricyanic acid oxalic acid oxybenzene sulphuric acid carbamic acid ethanedioic acid dibasic acid sulphanilic acid oxaloacetic acid oxyacid carbonic acid hydrocyanic acid undecylenic acid bromic acid cyanamid phenylic acid hyponitrous acid tribasic acid permanganic acid sulfuric acid boric acid cyanuric acid
Antonyms
nice good-natured pleasing tasteless constructive
Etymology
acid (English)
acide (French)
acidus (French)
aceo (Latin)
acidus (Latin)

7. acid

adjective. (ˈæsəd) Harsh or corrosive in tone.
Synonyms
unpleasant acrid acerb vitriolic virulent caustic bitter blistering sulphurous sulfurous acerbic
Antonyms
pleasant smooth rough simple decrease
Etymology
acid (English)
acide (French)
acidus (French)
aceo (Latin)
acidus (Latin)

8. acid

adjective. (ˈæsəd) Having the characteristics of an acid.
Synonyms
acidic
Antonyms
alkaline amphoteric
Etymology
acid (English)
acide (French)
acidus (French)
aceo (Latin)
acidus (Latin)

9. acid

adjective. (ˈæsəd) Being sour to the taste.
Synonyms
acidulous sour acidulent acidic
Antonyms
sweet disintegrate take away analyze disassemble
Etymology
acid (English)
acide (French)
acidus (French)
aceo (Latin)
acidus (Latin)

10. acid

noun. (ˈæsəd) Street name for lysergic acid diethylamide.
Synonyms
loony toons pane back breaker dose battery-acid dot Elvis Lucy in the sky with diamonds superman lysergic acid diethylamide LSD window pane Zen
Antonyms
bring to follower inoffensive palatable unpleasantness
Etymology
acid (English)
acide (French)
acidus (French)
aceo (Latin)
acidus (Latin)
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