noun · verb · 8 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˈbækˌlæʃ/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:B AE1 K L AE2 SH
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A suddenly reversed or backward motion, such as of a rope or elastic band when it snaps under tension.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Qualifier: literal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A negative reaction, objection or outcry, especially of a violent or abrupt nature.
Definition source: English Wiktionary via Wiktextract
Usage: countable, figuratively, uncountable
Examples
The public backlash to the proposal was quick and insistent.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
The looseness through which one part of connected machinery, such as a wheel, gear, piston, or screw, can be moved without moving the connected parts, or a measurement of the distance moved thereby; either intentional (as allowance) or unintentional (from error or wear).
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: lash, play
Antonyms: none provided
5
verb
Meaning 5
To perform a backlash, to lash back in reaction to some cause.
Definition source: English Wiktionary via Wiktextract
Examples
1894 William Westall. Tinkler. Ludgate Illustrated Magazine. Vol VIII Thrutch factory was a queer old concern. It had been built piecemeal-here a bit and there a bit. There were a new end and an old end, the spinning-rooms in the one being light and lofty, in the other low. and gloomy. Looms were shoved in everywhere. There were a "long shop" with three hundred, a "top shop" with a hundred, a "back shop" with fifty-three, and a "little shop" with fifteen. Never was its equal for gearing. Shafts were everywhere inside and out, overground and underground, climbing snake-like up the walls, and boring into the roofs; spurwheels, great and small, whirled, clashed and "backlashed" all over the place.
1909 La Compagnie Générale Transatlantique v. Hayes. (Circuit Court of Appeals, Second Circuit. March 16, 1909.) No. 205. There was testimony that but for the orders of these men, or one of them, the case would have been properly backlashed before being lowered into the hold and that the anxiety of the foreman to get the cargo in quickly induced him to order this case sent down without being properly safeguarded.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
an adverse reaction to some political or social occurrence
Definition source: Princeton WordNet 3.0
Examples
there was a backlash of intolerance
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: reaction
Narrower terms: whitelash, white backlash
7
noun
Meaning 7
a movement back from an impact
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.