FluentPlex

foil

/fɔɪl/ verb C2
  1. To prevent (something) from being accomplished. · They foiled my plans.
  2. To prevent (someone) from accomplishing something. · I was foiled by my superior.
  3. To blunt; to dull; to spoil.

He/she/it foils · Past foiled · Past participle foiled · -ing form foiling

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Verb forms

Base form
foil
He/she/it
foils
Past
foiled
Past participle
foiled
-ing form
foiling

From the library

The crate upon which I sit contains 2,000 napoleons packed between layers of lead foil.
The Adventures of Sherlock Holmes, p. 27 · B2
“I feel a foil as quick and supple as my own.
The Hound of the Baskervilles, p. 59 · C1

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.