Find Antonyms
foil Antonyms
Opposite of foil
Because the opposite of foil shifts with each meaning, the 11 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
• verb (Context 1)
To prevent a plot, plan, or attempt from succeeding.
Usage Example
"The vigilant security guard foiled the attempted bank robbery by quickly locking the front doors."
Strongest
facilitate
abet
Strong
promote
further
aid
assist
foster
• noun (Context 2)
A person or thing that contrasts with another entity, thereby emphasizing and enhancing its distinct qualities.
Usage Example
"In the novel, the impulsive and chaotic sidekick serves as a perfect clone to the cautious detective."
Strong
clone
double
duplicate
look-alike
Similar words to foil
Words similar to foil shift depending on context. Common synonyms include:
thwart
frustrate
tinfoil
balk
derail
scuttle
stymie
scupper
Cite this Entry
Wordmom. (2026). Antonyms for Foil. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/foil