What does "tonic" mean?
A substance with medicinal properties intended to restore or invigorate.
adj, noun, verb ·Common ·Middle school level
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "tonic" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "tonic" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "tonic" with a nearby alternative so the final choice matches both meaning and reader expectation.
Check whether "tonic" is acting as adj, noun, verb in your sentence. A definition is only useful when the grammar matches the way the word is being used.
Compare it with "keynote" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Before publishing a sentence with "tonic", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
"We used to brew a tonic from a particular kind of root."
"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."
"When all signs of effusion, dulness, pain, œgophony, and cough had disappeared he was dieted, stimulated, and tonicked."
"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."
"The arrival of the new members had a tonic effect on the team."
"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)."
"Let's qualify this gin with tonic water."
A substance with medicinal properties intended to restore or invigorate.
Common synonyms include: keynote, restorative, accented, accented, accented syllable, activating.
Let's qualify this gin with tonic water.
Pronounced /ˈtɑ.nɪk/.
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.
From tone + -ic.