intensify

verb

in·​ten·​si·​fy in-ˈten(t)-sə-ˌfī How to pronounce intensify (audio)
intensified; intensifying

intransitive verb

: to become intense or more intensive : grow stronger or more acute

transitive verb

1
: to make intense or more intensive : strengthen
2
a
: to make more acute : sharpen
b
: to increase the density and contrast of (a photographic image) by chemical treatment
intensification noun

Examples of intensify in a Sentence

We could hear the wind howling outside as the storm intensified. They intensified their efforts to increase sales. an intensified search for survivors
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.
Where one structure meets another, at a phase boundary, their most useful properties intensify. Neetika Walter, Interesting Engineering, 14 Nov. 2025 The winds will ease as the system drops into Southern California, but the flood threat will intensify as an atmospheric river feeds moisture from the ocean into the storm. Taylor Ward, CNN Money, 14 Nov. 2025 Several college football coaching jobs have opened in recent weeks and months, and as the season winds down, programs will soon intensify their searches for the next head coach to lead their teams. Cole Sullivan, MSNBC Newsweek, 14 Nov. 2025 The attacks have intensified in recent weeks as Palestinians harvest their olive trees in an annual ritual. NPR, 13 Nov. 2025 See All Example Sentences for intensify

Word History

First Known Use

1817, in the meaning defined at transitive sense 1

Time Traveler
The first known use of intensify was in 1817

Browse Nearby Words

Cite this Entry

“Intensify.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/intensify. Accessed 18 Nov. 2025.

Kids Definition

intensify

verb
in·​ten·​si·​fy in-ˈten(t)-sə-ˌfī How to pronounce intensify (audio)
intensified; intensifying
: to make or become intense or more intensive
intensification noun
intensifier
-ˈten(t)-sə-ˌfī(-ə)r
noun

Medical Definition

intensify

verb
in·​ten·​si·​fy in-ˈten(t)-sə-ˌfī How to pronounce intensify (audio)
intensified; intensifying

transitive verb

1
: to make intense or more intensive
2
a
: to increase the density and contrast of (a photographic image) by special treatment
b
: to make more acute
use of illicit drugs intensified the patient's condition

intransitive verb

: to become intense or more intensive : grow stronger or more acute
the sore throat, headache, and fever intensified as the disease progressed
intensification noun

More from Merriam-Webster on intensify

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