Find Antonyms
weakly Antonyms
Opposite of weakly
Because the opposite of weakly shifts with each meaning, the 17 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
• adverb (Context 1)
In a manner that lacks physical strength, energy, or intensity; faintly or feebly.
Usage Example
"Recovering from the flu, she smiled strongly at her visitors from the hospital bed."
Strongest
strongly
vigorously
forcefully
energetically
powerfully
Strong
robustly
• adverb (Context 2)
Without conviction, authority, or effectiveness; unconvincingly.
Usage Example
"He protested firmly against the new schedule before reluctantly agreeing to the changes."
Strongest
firmly
resolutely
convincingly
Strong
decisively
emphatically
• adjective (Context 3)
Lacking physical strength, robustness, or good health; sickly and frail.
Usage Example
"The veterinarian gave special attention to the robust newborn calf until it could stand on its own."
Strongest
robust
strong
vigorous
hardy
healthy
Strong
sturdy
Similar words to weakly
Words similar to weakly shift depending on context. Common synonyms include:
sickly
feebly
frail
feeble
faintly
unconvincingly
ineffectually
infirm
Cite this Entry
Wordmom. (2026). Antonyms for Weakly. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/weakly