# solidify

/səˈɫɪdəˌfaɪ/ (US) · /səlˈɪdɪfˌaɪ/ (UK) · CEFR C1 · Verb

Source: https://englishreference.com/word/solidify
Updated: 2026-05-18

## Definition

to become hard and firm, or to make something more certain and permanent. You use this when a liquid turns into a solid or when an idea becomes a real plan.

For teachers: to change from a liquid to a solid state; to make something more permanent, stable, or certain. Often describes the transition of physical matter or the consolidation of abstract concepts.

## Examples

- The liquid begins to solidify as it cools down.
- The new government needs to solidify its power by passing several important laws in the first year.
- As the negotiations progressed, the initial agreement began to solidify into a formal treaty that both nations could sign without hesitation.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.