Find Antonyms
weaken Antonyms
Opposite of weaken
Because the opposite of weaken shifts with each meaning, the 16 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
• verb (Context 1)
To make or become less strong in physical power, structural integrity, authority, or effectiveness.
Usage Example
"Years of harsh coastal weather had begun to strengthen the old wooden pier."
Strongest
strengthen
fortify
bolster
reinforce
Strong
invigorate
buttress
• verb (Context 2)
To become less intense, severe, or resolute; to waver in determination or conviction.
Usage Example
"The storm is expected to intensify considerably once it moves inland over the mountains."
Strongest
intensify
Strong
grow
escalate
harden
persist
• verb (Context 3)
To decline in market value, exchange rate, or purchasing power (especially of a currency, stock, or economy).
Usage Example
"The national currency continued to appreciate against major foreign benchmarks throughout the third quarter."
Strongest
appreciate
rally
Strong
rebound
surge
climb
Similar words to weaken
Words similar to weaken shift depending on context. Common synonyms include:
enfeeble
depreciate
diminish
debilitate
slump
wane
decline
subside
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Weaken. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/weaken