Harden and Thicken

Harden

Harden verb - To become physically firm or solid.
Usage example: the glue begins to harden as soon as it is exposed to air

Thicken is a synonym for harden in solidify topic. In some cases you can use "Thicken" instead a verb "Harden", when it comes to topics like activity, coagulate, crust, clot. popular alternative

Nearby Words: hard, hardness, hardening, hardener

Thicken

Thicken verb - Make thick or thicker.

Harden is a synonym for thicken in activity topic. You can use "Harden" instead a verb "Thicken", if it concerns topics such as process, set, coagulate, crust. popular alternative

Cite this Source
Thicken and Harden. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/harden/thicken
Harden & Thicken. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/harden/thicken>.
Thicken or Harden. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/harden/thicken.
Google Ngram Viewer shows how "harden" and "thicken" have occurred on timeline