Solidify (verb)

To make or become solid, firm, or stable.

Origin:

The word solidify comes from the latin word "solidus" meaning "solid" and "-ify" which is a suffix meaning "to make".

Examples:

1. The mixture solidified as it cooled.
2. The company has solidified its position as a market leader.
3. He solidified his reputation as a reliable worker.
4. The friendship solidified over time.
5. The team's victory helped solidify their confidence.