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[in-uh n-deyt, -uhn-, in-uhn-deyt] /ˈɪn ənˌdeɪt, -ʌn-, ɪnˈʌn deɪt/
verb (used with object), inundated, inundating.
to flood; cover or overspread with water; deluge.
to overwhelm:
inundated with letters of protest.
Origin of inundate
1615-25; < Latin inundātus, past participle of inundāre to flood, overflow, equivalent to in- in-2 + und(a) wave + -ātus -ate1
Related forms
inundation, noun
inundator, noun
[in-uhn-duh-tawr-ee, -tohr-ee] /ɪnˈʌn dəˌtɔr i, -ˌtoʊr i/ (Show IPA),
superinundation, noun
uninundated, adjective
2. glut. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for inundate
  • It is now being turned back into floodplain to absorb floodwaters that might otherwise inundate cities upstream.
  • Many will be lost with the resumption of the dam project, which is expected to inundate a third of the ancient city.
  • They bathe in gasoline and inundate their homes with pesticides.
  • And by the middle of this month, seasonal monsoons are expected to further inundate the region.
  • They can inundate coastal communities with violent flooding.
  • Flood waters will inundate much of the valley and many roads.
  • Deep and swift flood waters will inundate residential and business areas and numerous roads.
  • The eggs are guarded by females and hatch after autumn rains inundate the nest sites forming temporary pools.
  • Sea-level rise could inundate and damage coastal infrastructure in low-lying areas or make it more vulnerable to storm surges.
  • Over time, new vegetation grows on these surfaces, and more lava flows inundate the area.
British Dictionary definitions for inundate


verb (transitive)
to cover completely with water; overflow; flood; swamp
to overwhelm, as if with a flood: to be inundated with requests
Derived Forms
inundant, inundatory, adjective
inundation, noun
inundator, noun
Word Origin
C17: from Latin inundāre to flood, from unda wave
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for inundate

1620s, back-formation from inundation, or else from Latin inundatus, past participle of inundare "to overflow, run over" (see inundation). Related: Inundated; inundating.

Online Etymology Dictionary, © 2010 Douglas Harper
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