Find Synonyms
stiffen Synonyms
Another word for stiffen
Choosing another word for stiffen depends on context, so the 16 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
• verb (Context 1)
To make or become rigid, firm, or inflexible.
Usage Example
"The tailor used heavy interfacing to harden the collar of the jacket."
Strongest
harden
rigidify
Strong
firm
solidify
thicken
• verb (Context 2)
To suddenly tense one's body or muscles, especially in reaction to fear, shock, or anger.
Usage Example
"She felt her shoulders tense as she heard footsteps approaching in the dark hallway."
Strongest
tense
Strong
tauten
tighten
brace
contract
• verb (Context 3)
To make or become stronger, more severe, or more resolute (such as penalties, resistance, or wind).
Usage Example
"The unexpected setback only served to strengthen their resolve to complete the expedition."
Strongest
strengthen
Strong
fortify
reinforce
toughen
steel
intensify
Opposites of stiffen
The opposite of stiffen shifts depending on context. Common opposites include:
weaken
soften
relax
ease
loosen
unbend
relent
limber
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Stiffen. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/stiffen