stiffen
3 synonyms and 1 antonym for stiffen, grouped by meaning and by how common each one is.
Verb — To make something rigid or less flexible.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use stiffen
The word patterns that sound natural to a native speaker.
Etymology
From Middle English stifnen — "stiff" plus the verb-forming ending "-en", same pattern as "harden" or "soften".
Full origin of stiffen →