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Synonyms

solidify

American  
[suh-lid-uh-fahy] / səˈlɪd əˌfaɪ /

verb (used with object)

solidifies, present (3rd person singular) solidified, past participle, past solidifying present participle
  1. to make solid; make into a hard or compact mass; change from a liquid or gaseous to a solid form.

  2. to unite firmly or consolidate.

  3. to form into crystals; make crystallized.


verb (used without object)

solidifies, present (3rd person singular) solidified, past participle, past solidifying present participle
  1. to become solid.

  2. to form into crystals; become crystallized.

solidify British  
/ səˈlɪdɪˌfaɪ /

verb

  1. to make or become solid or hard

  2. to make or become strong, united, determined, etc

"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

Other Word Forms

Derived Forms

Etymology

Origin of solidify

From the French word solidifier, dating back to 1790–1800. See solid, -ify

Explanation

To solidify is to make something solid, like water becoming ice, or a plan becoming more concrete. If you’re meeting a friend, you should solidify the plan before you go and decide where and what time to meet. To solidify is to become a solid, like lemonade solidifying into a popsicle, or dissolved sugar solidifying into yummy rock candy. Also, this word can apply to non-physical things. If a couple gets engaged, they're solidifying their relationship. Getting a promotion could solidify your career. Anything becoming firmer or more real is a type of solidifying. In any sense, whatever gets solidified becomes stronger.

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Vocabulary lists containing solidify

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.

“I see a position to solidify myself here as well among the very greats,” he said.

From Los Angeles Times • Jun. 2, 2026

These pockets of magma often become trapped beneath the lithosphere, where they slowly cool and solidify into CO2-rich igneous rocks.

From Science Daily • May 26, 2026

In October, they swept aside Brendan Rodgers' side 3-1 at Tynecastle to solidify their title credentials.

From BBC • May 15, 2026

“Instead, Black voters from these areas were dispersed across multiple districts, . . . which may solidify Democratic support but are not necessarily structured to enhance Black political influence.”

From The Wall Street Journal • May 10, 2026

Inch by inch, Clare saw his fate solidify.

From "The Undead Fox of Deadwood Forest" by Aubrey Hartman

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