tonic

ton·ic
T1O1N1I1C3
UK/ˈtɒnɪk/Atlantic Canada, US/ˈtɑ.nɪk/Australia/ˈtɔnɪk/New Zealand[ˈtɔ̟nək]

adjective

Pertaining to tension, especially of the muscles.

“We used to brew a tonic from a particular kind of root.”

Opposite
Less commonScrabble 7

Meanings

tonic1

adjectivetonic (comparative more tonic, superlative most tonic)

comparative more tonic · superlative most tonic · alternative obsolete tonick

  1. medicinePertaining to tension, especially of the muscles.

    Out in front and across the street, Doc noted half a dozen or so young men, not loitering or doing substances but poised and tonic, as if waiting for some standing order to take effect.

    2009, Thomas Pynchon, Inherent Vice, Vintage, published 2010, page 316
  2. Restorative; curative; or invigorating.

    The arrival of the new members had a tonic effect on the team.

  3. medicineIn a state of continuous unremitting action.

    Peter Redgrave (2007) Basal ganglia. Scholarpedia, 2(6):1825. GABAergic neurones in the basal ganglia output nuclei have high tonic firing rates (40-80 Hz).

nountonic (usually uncountable, plural tonics)

plural tonics · alternative obsolete tonick

  1. uncountableusuallyA substance with medicinal properties intended to restore or invigorate.

    We used to brew a tonic from a particular kind of root.

  2. uncountableusuallyTonic water.
  3. BostonUSdateduncountableusuallyAny of various carbonated, non-alcoholic beverages; soda pop.
  4. figurativelyuncountableusuallySomeone or something that revitalises or reinvigorates.

    'You're a tonic, Dee,' she said. 'And a real friend. Thanks.'

    2011, Cathy Kelly, She's the One
    2 more examples

    Charlie ain't no Nazi / She likes to wear her leather boots / 'Cause it's exciting for the veterans / And it's a tonic for the troops.

    1978, “She's So Modern”, performed by The Boomtown Rats

    The result is the perfect tonic for Newcastle, coming at the end of a week that saw the departure of Andy Carroll to Liverpool on Monday and an injury to Shola Ameobi during Wednesday's defeat at Fulham.

    2011 February 5, Paul Fletcher, “Newcastle 4 - 4 Arsenal”, in BBC
verbtonic (third-person singular simple present tonics, present participle tonicking, simple past and past participle tonicked)

present singular third person tonics · participle present tonicking · participle past tonicked · past tonicked · alternative obsolete tonick

  1. archaicmedicineTo restore or invigorate.

    When all signs of effusion, dulness, pain, œgophony, and cough had disappeared he was dieted, stimulated, and tonicked.

    1887, Medical Press and Circular, volume 94, page 461
    1 more example

    The Persians, as a nation, were first to discover that fish were edible. The time is fixed at about 3000 B.C. This was their secret for some centuries—until the Assyrians learned about the elegance of fish for tonicking the brain.

    1939, Frank Grant Menke, Encyclopedia of Sports, page 17

tonic2

adjectivetonic (not comparable)

alternative obsolete tonick

  1. not comparableentertainmentPertaining to or based upon the first note of a diatonic scale.
  2. not comparablePertaining to the accent or stress in a word or in speech.
  3. not comparableOf or relating to tones or sounds; specifically (phonetics, dated) being or relating to a speech sound made with tone unmixed and undimmed by obstruction, i.e. a vowel or diphthong.
nountonic (plural tonics)

plural tonics · alternative obsolete tonick

  1. entertainmentThe first note of a diatonic scale; the keynote.
  2. entertainmentThe triad built on the tonic note.
  3. human sciencesA tonic element or letter; a vowel or a diphthong.

Synonyms & antonyms

adjectiveemploying variations in pitch to distinguish meanings of otherwise similar words

Similar

adjective(used of syllables) bearing the principle stress, usually accompanied by a change in pitch

Similar
Opposite

adjectiverelating to or being the keynote of a major or minor scale

Similar

adjectiveimparting vitality and energy

nounlime- or lemon-flavored carbonated water containing quinine

Broader

nouna sweet drink containing carbonated water and flavoring

Broader

noun(music) the first note of a diatonic scale

Similar
Broader
notemusical notetone

nouna medicine that strengthens and invigorates

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

tonic · adjective, noun, verb

  1. Proto-Indo-European*ten-
  2. Proto-Indo-European*tónos
  3. Proto-Hellenic*tónos
  4. Ancient Greekτόνος (tónos)
  5. Ancient Greekτονῐκός (tonĭkós)
  6. Englishtonic

From Ancient Greek τονικός (tonikós), from τόνος (tónos). 17th century writers believed health to be derived from firmly stretched muscles, thus tonic; the extension of tonic medicine appeared in the late 18th century. By surface analysis, ton(e) + -ic.

Full word history & related roots →

tonic · adjective, noun

From tone + -ic.

Full word history & related roots →

Translations

Bulgarian тонизиращ
  • тонизиращ (tonizirašt)curative
Chinese Mandarin 補品 /补品, 補藥 /补药
  • 補品 /补品 (bǔpǐn)substance
  • 補藥 /补药 (bǔyào)substance
  • 主音 (zhǔyīn)first note of a scale
Dutch tonica, grondtoon
  • tonicafirst note of a scale
  • grondtoonfirst note of a scale
Finnish jännittynyt, parantava
  • jännittynytpertaining to tension
  • parantavacurative
  • virkistesubstance
  • piristysruiskefiguratively: something that reinvigorates
  • toonikafirst note of a scale
  • perussävelfirst note of a scale
French tonique, tonic
  • toniquesubstance
  • tonicsubstance
  • toniquefirst note of a scale
German tonisch, anregend
  • tonischpertaining to tension
  • anregendcurative
  • belebendcurative
  • kräftigendcurative
  • stärkendcurative
  • Kräftigungsmittelsubstance
  • Stärkungsmittelsubstance
  • Elixiersubstance
  • Tonikumsubstance
  • Tonicsubstance
  • erfrischendfiguratively: something that reinvigorates
  • belebendfiguratively: something that reinvigorates
  • Tonikafirst note of a scale
  • Grundtonfirst note of a scale
  • Tonikatriad built on the tonic note
Italian tonica
  • tonicafirst note of a scale
Japanese トニック, 主音
  • トニック (tonikku)substance
  • 主音 (shyuon)first note of a scale
Korean 토닉
  • 토닉 (tonik)substance
Māori oro matua
  • oro matuafirst note of a scale
Portuguese tónico, tônico
  • tónicocurative
  • tônicocurative
  • tónicosubstance
  • tônicosubstance
  • tónicofiguratively: something that reinvigorates
  • tônicofiguratively: something that reinvigorates
  • tónicafirst note of a scale
  • tônicafirst note of a scale
Russian то́ник, то́ника
  • то́ник (tónik)substance
  • то́ника (tónika)first note of a scale
Spanish tónico, tónico
  • tónicocurative
  • tónicosubstance
Swedish grundton
  • grundtonfirst note of a scale
Turkish tonik
  • toniksubstance

Rhymes & wordplay

Rhymes with tonic

All rhymes →

Anagrams

Cite this entry
APA

tonic. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/tonic

MLA

“tonic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tonic. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “tonic,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/tonic.

Source: tonic on Wiktionary, CC BY-SA 4.0.