acid
Appearance
English
[edit]Etymology
[edit]Etymology tree
From French acide, from Latin acidus (“sour, acid”), from aceō (“to be sour”). Doublet of agita.
Pronunciation
[edit]- (Received Pronunciation, General American, Canada, Australia) enPR: ăs'ĭd, IPA(key): /ˈæsɪd/
Audio (North Carolina): (file) Audio (California): (file)
- Rhymes: -æsɪd
Adjective
[edit]acid (comparative acider, superlative acidest)
- Sour, sharp, or biting to the taste; tart; having the taste of vinegar.
- acid fruits or liquors
- (figuratively) Sour-tempered.
- His response was harsh and acid.
- 1864, Anthony Trollope, The Small House at Allington, 2nd edition, volume 2, Smith, Elder & Co., page 235:
- His voice was as stern and his face as acid as ever.
- 1912, Arthur Conan Doyle, The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC:
- It must be admitted that Challenger is provocative in the last degree, but Summerlee has an acid tongue, which makes matters worse.
- 1914 November, Louis Joseph Vance, “An Outsider […]”, in Munsey’s Magazine, volume LIII, number II, New York, N.Y.: The Frank A[ndrew] Munsey Company, […], published 1915, →OCLC, chapter I (Anarchy), page 373, column 2:
- Little disappointed, then, she turned attention to "Chat of the Social World," gossip which exercised potent fascination upon the girl's intelligence. She devoured with more avidity than she had her food those pretentiously phrased chronicles of the snobocracy—[…]—distilling therefrom an acid envy that robbed her napoleon of all its flavor.
- Of or pertaining to an acid; acidic.
- acid soils
- 1975, Peter N. Barber, Cecil Ernest Lucas Phillips, The Trees Around Us, page 101:
- Like other nyssas, it is in nature a creature of swampy places and looks loveliest where massed close to water and reflected in it, but justifies itself elsewhere if the soil is moist and acid, succeeding in wet clay.
- (music) Denoting a musical genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock.
Quotations
[edit]- For quotations using this term, see Citations:acid.
Synonyms
[edit]Antonyms
[edit]Derived terms
[edit]- acidaemia
- acid amide
- acid anhydride
- acid attack
- acid-base
- acid-base pair
- acid bomb
- acid breaks
- acid chloride
- acidcore
- acid dissociation constant
- acid drop
- acidemia
- acidergic
- acid-fastness
- acid-forming
- acid-free
- acid house
- acidimetre
- acidimetric
- acidimetry
- acid indigestion
- acidise
- acidization
- acidize
- acid jazz
- acidless
- acid lime
- acid mordant
- acidness
- acid number
- acidocyte
- acidogenesis
- acidogenic
- acidoid
- acidolysis
- acidometer
- acidophil
- acidophilia
- acidophyte
- acidopore
- acidotropic
- acid reflux
- acid rock
- acid snow
- acid-stable
- acid-tongued
- acidulate
- acidulous
- aciduria
- acid value
- acid-wash
- acid-washable
- acid weed
- acidy
- acitretin
- antacid
- antiacid
- biacid
- conjugate acid-base pair
- diacid
- haloacid
- hexacid
- hydracid
- hyperacid
- hypoacid
- isoacid
- ketoacid
- monacid
- monoacid
- niacin
- nonacid
- orthoacid
- overacid
- oxoacid
- oxyacid
- pentacid
- peracid
- peroxyacid
- phenoxyacid
- photoacid
- polyacid
- pyroacid
- semiacid
- skacid
- subacid
- sulfacid
- sulfoacid
- sulphoacid
- superacid
- tetraacid
- tetracid
- thermoacidophile
- thioacid
- triacid
Related terms
[edit]Translations
[edit]sour, sharp, or biting to the taste
|
sour-tempered
|
of or pertaining to an acid
|
- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
Translations to be checked
Noun
[edit]
acid (countable and uncountable, plural acids)
- A sour substance.
- (chemistry)
- Any compound which yields H+ ions (protons) when dissolved in water; an Arrhenius acid.
- 2015 August 18, Clelia De-la-Peña et al., “The role of chromatin modifications in somatic embryogenesis in plants”, in Frontiers in Plant Science[1], volume 6, :
- SE onset depends on a complex network of interactions among plant growth regulators, mainly auxins and cytokinins, during the proembryogenic early stages, and ethylene and gibberellic and abscisic acids later in the development of somatic embryos.
- Any compound that easily donates protons to a base; a Brønsted acid.
- Any compound that can accept a pair of electrons to form a covalent bond; a Lewis acid.
- Any compound which yields H+ ions (protons) when dissolved in water; an Arrhenius acid.
- Any corrosive substance.
- 2006, James Fenton, Jerusalem:
- You are in error. / This is terror. / This is your banishment. This land is mine. / This is what you earn. / This is the Law of No Return. / This is the sour dough, this the sweet wine. / This is my history, this my race / And this unhappy man threw acid in my face.
- (uncountable, slang) LSD, lysergic acid diethylamide.
- 1967, Joe David Brown, editor, The Hippies, New York: Time, Inc, page 171:
- In the end, though, there is one sure way to distinguish a real hippie from his assorted sympathizers: hippies drop acid. That is, real hippies frequently, if irregularly, ingest LSD.
Antonyms
[edit]Hyponyms
[edit]- See also Thesaurus:acid/Hyponyms
Derived terms
[edit]terms derived from “acid”
Descendants
[edit]- → Welsh: asid
Translations
[edit]a sour substance
|
in chemistry
|
LSD
|
- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
Translations to be checked
See also
[edit]References
[edit]- “acid”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
Anagrams
[edit]Albanian
[edit]Noun
[edit]acid m (plural acide, definite acidi, definite plural acidet)
Declension
[edit]| singular | plural | |||
|---|---|---|---|---|
| indefinite | definite | indefinite | definite | |
| nominative | acid | acidi | acide | acidet |
| accusative | acidin | |||
| dative | acidi | acidit | acideve | acideve |
| ablative | acidesh | |||
Further reading
[edit]- FGJSSH: Fjalor i gjuhës së sotme shqipe [Dictionary of the modern Albanian language][2], 1980
- “acid”, in FGJSH: Fjalor i gjuhës shqipe [Dictionary of the Albanian language] (in Albanian), 2006
Dutch
[edit]Etymology
[edit]Unadapted borrowing from English acid.
Attested since at least 1970.
Pronunciation
[edit]Audio: (file)
Noun
[edit]acid m (uncountable, no diminutive)
- (slang) LSD, lysergic acid diethylamide
- Synonym: LSD
- (music) acid
Romanian
[edit]Etymology
[edit]Borrowed from French acide, from Latin acidus (“sour, acid”).
Pronunciation
[edit]Adjective
[edit]acid m or n (feminine singular acidă, masculine plural acizi, feminine/neuter plural acide)
Declension
[edit]| singular | plural | ||||||
|---|---|---|---|---|---|---|---|
| masculine | neuter | feminine | masculine | neuter | feminine | ||
| nominative- accusative |
indefinite | acid | acidă | acizi | acide | ||
| definite | acidul | acida | acizii | acidele | |||
| genitive- dative |
indefinite | acid | acide | acizi | acide | ||
| definite | acidului | acidei | acizilor | acidelor | |||
Related terms
[edit]Noun
[edit]acid m (plural acizi)
Declension
[edit]| singular | plural | |||
|---|---|---|---|---|
| indefinite | definite | indefinite | definite | |
| nominative-accusative | acid | acidul | acizi | acizii |
| genitive-dative | acid | acidului | acizi | acizilor |
| vocative | acidule | acizilor | ||
Derived terms
[edit]Further reading
[edit]- “acid”, in DEX online—Dicționare ale limbii române (Dictionaries of the Romanian language) (in Romanian), 2004–2026
Spanish
[edit]Pronunciation
[edit]- IPA(key): /ˈaθid/ [ˈa.θið̞] (Equatorial Guinea, Spain)
- IPA(key): /ˈasid/ [ˈa.sið̞] (Latin America, Philippines)
- Rhymes: -aθid (Equatorial Guinea, Spain)
- Rhymes: -asid (Latin America, Philippines)
- Syllabification: a‧cid
Adjective
[edit]acid (invariable)
Noun
[edit]acid m (uncountable)
Further reading
[edit]- “acid”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025
Categories:
- English terms derived from the Proto-Indo-European root *dʰeh₁-
- English terms derived from the Proto-Indo-European root *h₂eḱ-
- English terms derived from Proto-Indo-European
- English terms derived from Proto-Italic
- English terms derived from French
- English terms derived from Latin
- English terms borrowed from French
- English doublets
- English 2-syllable words
- English terms with IPA pronunciation
- English terms with audio pronunciation
- Rhymes:English/æsɪd
- Rhymes:English/æsɪd/2 syllables
- English lemmas
- English adjectives
- English terms with collocations
- English terms with usage examples
- English terms with quotations
- en:Music
- English nouns
- English uncountable nouns
- English countable nouns
- English slang
- en:Acids
- en:Recreational drugs
- Albanian lemmas
- Albanian nouns
- Albanian masculine nouns
- sq:Chemistry
- Dutch terms borrowed from English
- Dutch unadapted borrowings from English
- Dutch terms derived from English
- Dutch terms with audio pronunciation
- Dutch lemmas
- Dutch nouns
- Dutch uncountable nouns
- Dutch masculine nouns
- nl:Recreational drugs
- Dutch slang
- nl:Music
- Romanian terms borrowed from French
- Romanian terms derived from French
- Romanian terms derived from Latin
- Romanian terms with IPA pronunciation
- Romanian lemmas
- Romanian adjectives
- Romanian nouns
- Romanian countable nouns
- Romanian masculine nouns
- ro:Chemistry
- Spanish 2-syllable words
- Spanish terms with IPA pronunciation
- Rhymes:Spanish/aθid
- Rhymes:Spanish/aθid/2 syllables
- Rhymes:Spanish/asid
- Rhymes:Spanish/asid/2 syllables
- Spanish lemmas
- Spanish adjectives
- Spanish indeclinable adjectives
- es:Music
- Spanish nouns
- Spanish uncountable nouns
- Spanish masculine nouns

