fallback

1 of 2

noun

fall·​back ˈfȯl-ˌbak How to pronounce fallback (audio)
1
: something on which one can fall back : reserve
often used attributively
a fallback career
a fallback position
2
: a falling back : retreat
3
: something that falls back
the fallback from an explosion

fall back

2 of 2

verb

fell back; fallen back; falling back; falls back
see also:

Examples of fallback in a Sentence

Verb resistance from native forces was greater than expected, and the invading army was forced to fall back
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Instead, the collapse results in a faint supernova with significant fallback, in which the heavier elements from the star’s core, such as oxygen, are sucked back past the event horizon and trapped in the black hole beneath. Jacek Krywko, ArsTechnica, 13 May 2026 Cal finally told Kayce the truth — that Garrett had been the one to wrongly claim that Roner was dead during the mission — which led Cal to issue a fallback order. Julia Moore, PEOPLE, 11 May 2026
Verb
While more experienced doctors might have the ability to fall back on years of clinical expertise, some worry that reliance on such a medical tool might lead to dependence and misplaced confidence among medical students and junior doctors. Jared Perlo, NBC news, 13 May 2026 The Fed typically looks past temporary price increases that stem from supply disruptions, such as the war’s cutoff of oil through the Strait of Hormuz, because those prices typically level off — or even fall back down — once the supply is restored. Christopher Rugaber, Los Angeles Times, 13 May 2026 See All Example Sentences for fallback

Word History

First Known Use

Noun

1830, in the meaning defined at sense 2

Verb

1607, in the meaning defined above

Time Traveler
The first known use of fallback was in 1607

Browse Nearby Words

See all Nearby Words

Cite this Entry

“Fallback.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fallback. Accessed 17 May. 2026.

Kids Definition

fall back

verb
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster