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

In recent weeks, more than 100 companies spanning disparate sectors, from Costco to Revlon and Kawasaki, have sued the administration with the aim of solidifying their eligibility for tariff refunds should the duties be invalidated. —Kate Nishimura, Sourcing Journal, 16 Dec. 2025

When wax begins to solidify and turn opaque, poke the flat side of a skewer through the center and remove. —Janna Oberdorf, Parents, 15 Dec. 2025

This is a testament to our mission – solidified over the last 15 years – to be the best neighbor possible here in Queens. —Mark Prussin, CBS News, 15 Dec. 2025

Once cooled, the mixture solidifies into glass logs that are sealed inside stainless-steel canisters designed to hold for thousands of years. —New Atlas, 14 Dec. 2025

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