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intensify

American  
[in-ten-suh-fahy] / ɪnˈtɛn səˌfaɪ /

verb (used with object)

intensified, intensifying
  1. to make intense or more intense.

    Synonyms:
    concentrate, quicken, deepen
    Antonyms:
    weaken, alleviate
  2. to make more acute; strengthen or sharpen.

    Synonyms:
    concentrate, quicken, deepen
  3. Photography. to increase the density and contrast of (a negative) chemically.


verb (used without object)

intensified, intensifying
  1. to become intense or more intense.

intensify British  
/ ɪnˈtɛnsɪˌfaɪ /

verb

  1. to make or become intense or more intense

  2. (tr) to increase the density of (a photographic film or plate)

"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

Related Words

See aggravate.

Other Word Forms

Etymology

Origin of intensify

First recorded in 1810–20; intense + -ify

Explanation

To intensify is to increase the intensity, force, or power of something. If you snap a selfie and the colors aren't intense enough, you may be able to intensify them with a photo editor. You can see the word "intense" in intensify, which clues you in to the meaning of the verb. When you make something more intense, you intensify it — make it more of whatever it is. Believe it or not, a pinch of salt can actually intensify the sweetness of the sugar in a cake. It makes it even sweeter. Storm chasers never know whether a tornado will continue to intensify or begin to abate as they approach — and the difference could mean life or death for them.

Keep Reading on Vocabulary.com

Vocabulary lists containing intensify

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Appeared in the March 6, 2026, print edition as 'Large-Scale Attacks Intensify Tensions in Middle East'.

From The Wall Street Journal • Mar. 6, 2026

“Even if we don’t find the love of my life alive, they have to be found, please. Intensify these searches.”

From Seattle Times • Jun. 8, 2022

Intensify the work of a Trilateral Contact Group including representatives of Russia, Ukraine and the OSCE.

From Reuters • Dec. 6, 2021

Intensify animal instinct ever so much, and you have not reached the plane of reason.

From Ways of Nature by Burroughs, John

Intensify my desire for the songs and glorious ways, that I may not settle into dullness and slumber, while others pass on in the light.

From Leaves of Life For Daily Inspiration by Steinmetz, Margaret Bird