solidify

verb

so·​lid·​i·​fy sə-ˈli-də-ˌfī 

solidified; solidifying

transitive verb

1

: to make solid, compact, or hard

2

: to make secure, substantial, or firmly fixed

factors that solidify public opinion

intransitive verb

: to become solid, compact, or hard

solidification

sə-ˌli-də-fə-ˈkā-shən 

noun

Synonyms of solidify

• freeze
• harden
• stiffen

Examples of solidify in a Sentence

Work is under way to solidify the concrete that supports the building.

Hot wax solidifies as it cools.

Recent findings helped to solidify our position.

The international community is working to solidify its alliances.

Recent Examples on the Web

Today, as drones reshape our national security, Michigan’s selection as a national drone testing site further solidifies our state as the center of this transformation. —Jalen Williams, Freep.com, 4 Feb. 2026

From galas to film festivals and award shows, the couple has solidified their spot time and time again as one of the most gorgeous couples in Hollywood. —Alex Apatoff, PEOPLE, 4 Feb. 2026

Saudi Arabia and Türkiye solidified their increasingly close diplomatic and trade relations this week, with a slew of commitments to coordinate on defense and investment. —Matthew Martin, semafor.com, 4 Feb. 2026

Wilson and Swanson watched the national team from afar as Hayes evaluated younger players to solidify the lineup for next year’s Women’s World Cup in Brazil, as well as the 2028 Los Angeles Olympics. —Anne M. Peterson, Chicago Tribune, 3 Feb. 2026

Word History

First Known Use

1799, in the meaning defined at transitive sense 1

Rhymes for solidify

• acidify
• alveoli
• areolae
• demystify
• detoxify
• disqualify
• diversify
• electrify
• exemplify
• fasciculi
• identify
• indemnify

Kids Definition

solidify

verb

so·​lid·​i·​fy sə-ˈlid-ə-ˌfī 

solidified; solidifying

: to make or become solid, compact, or hard