foil

1 of 5

verb (1)

ˈfȯi(-ə)l

foiled; foiling; foils

Synonyms of foil next

transitive verb

: to prevent from attaining an end : defeat

always able to foil her enemies

Her accident foiled her from becoming a dancer.

: to bring to naught : thwart

foiled the plot

Police foiled an attempted robbery.

obsolete : trample

foil

2 of 5

noun (1)

: very thin sheet metal

aluminum foil

: a thin piece of material (such as metal) put under an inferior or paste stone to add color or brilliance

: someone or something that serves as a contrast to another

acted as a foil for a comedian

: an indentation between cusps in Gothic tracery

: one of several arcs that enclose a complex figure

: hydrofoil sense 1

foil

3 of 5

verb (2)

foiled; foiling; foils

transitive verb

: to back or cover with foil

: to enhance by contrast

foil

4 of 5

noun (2)

: a light fencing sword having a usually circular guard and a flexible blade of rectangular section tapering to a blunted point compare épée, saber

: the art or sport of fencing with the foil

—often used in plural

foil

5 of 5

noun (3)

archaic : defeat

archaic : the track or trail of an animal

Choose the Right Synonym for foil

frustrate, thwart, foil, baffle, balk mean to check or defeat another's plan or block achievement of a goal.

frustrate implies making vain or ineffectual all efforts however vigorous or persistent.

frustrated attempts at government reform

thwart suggests frustration or checking by crossing or opposing.

the army thwarted his attempt at a coup

foil implies checking or defeating so as to discourage further effort.

foiled by her parents, he stopped trying to see her

baffle implies frustration by confusing or puzzling.

baffled by the maze of rules and regulations

balk suggests the interposing of obstacles or hindrances.

officials felt that legal restrictions had balked their efforts to control crime

Examples of foil in a Sentence

Recent Examples on the Web

Verb

After Haman's plot is foiled, the Jews are actually still in danger — because the king's decree to kill the Jews has gone out, and can't be repealed. —

Deena Prichep, NPR, 23 Mar. 2024 Dutch director Michaël Dudok de Wit delivers an unconventional tale of a turtle that repeatedly foils a man’s attempts to escape a tropical island. —

Chris Snellgrove, EW.com, 26 Jan. 2024 Home security video and alert neighbors foiled a scheme to stage a fake hit-and-run crash for an insurance payout, California authorities reported. —

Don Sweeney, Sacramento Bee, 25 Jan. 2024 The delay came days after NASA's joint effort with private companies to put a U.S. lander on the moon failed after the launch of Peregrine Mission 1 was foiled by a fuel leak on Monday. —

USA TODAY, 10 Jan. 2024 But my plan was foiled when the hotel emailed me its activities schedule one week prior to my departure. —

Jen Murphy, Condé Nast Traveler, 29 Feb. 2024 The first attempt was foiled by the 1929 stock-market crash; the second, in the ’80s, faced protests from famous residents, including Plimpton and FitzGerald. —

Adriane Quinlan, Curbed, 6 Feb. 2024 Russian authorities claimed to have foiled dozens of Ukrainian drone and missile attacks since the new year. —

Joseph Ataman, CNN, 31 Jan. 2024 Trend Micro Maximum Security takes the concept further, with the option to remotely seal the vault, foiling even a thief who stole your laptop and your vault password. —

PCMAG, 22 Jan. 2024

Noun

Remove foil, and continue to bake until bubbling around edges and hot, 15 to 20 minutes more. —

Southern Living Test Kitchen, Southern Living, 10 Apr. 2024 Flip the paper over, and use a pin or thumbtack to poke a small hole in the foil. —

Jennifer Dixon, Detroit Free Press, 8 Apr. 2024 Take your empty cereal box, cut an inch square in the middle, tape foil over the square and poke a small hole in the foil. —

Laura Daniella Sepulveda, The Arizona Republic, 8 Apr. 2024 Savior, villain, hero, foil — the region needs all of them. —

Jon Wilner, The Mercury News, 5 Apr. 2024 For those who want to learn to sail fast with foils, the F101 trimaran might be the quickest, easiest way to get started, without having to do face plants with every bad tack. —

Jeff Hemmel, Robb Report, 2 Apr. 2024 To use your projector, place the paper screen on the ground, stand with the sun behind you, and hold your device with the foil facing up. —

Jesse Kirsch, NBC News, 28 Mar. 2024 Here are the instructions: Line a small empty matchbox with foil or parchment paper (so that the food can be eaten, if desired). —

Kimberly Stoney, Parents, 21 Mar. 2024 Tape a piece of aluminum foil over that cut-out shape, then use a pin or thumbtack to poke a tiny hole in the foil. —

Jesse Kirsch, NBC News, 28 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'foil.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Verb (1)

Middle English foilen "to trample, tread upon, mortify (the flesh), oppress," alteration of fullen "to full (cloth), trample down, oppress," perhaps by analogy with loanwords from French with palatal l that result in variants with -oi- and -u-, as coilen, cullen "to select for quality, pick out, cull entry 1" — more at full entry 5

Noun (1)

Middle English, leaf, from Anglo-French fuille, foille (from Latin folia, plural of folium) & fuil, from Latin folium — more at blade

Noun (2)

origin unknown

Noun (3)

derivative of foil entry 1

First Known Use

Verb (1)

14th century, in the meaning defined at sense 2

Noun (1)

14th century, in the meaning defined at sense 1

Verb (2)

1611, in the meaning defined at sense 1

Noun (2)

1594, in the meaning defined at sense 1

Noun (3)

15th century, in the meaning defined at sense 1

Time Traveler

The first known use of foil was in the 14th century

See more words from the same century

Cite this Entry

Style

“Foil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/foil. Accessed 19 Apr. 2024.

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Kids Definition

foil

1 of 3 verb

ˈfȯi(ə)l

: to prevent from achieving a goal : defeat

foil a plot

foil

2 of 3 noun

: a very thin sheet of metal

tin or aluminum foil

: one that serves as a contrast to another

acted as a foil for the comedian

foil

3 of 3 noun

: a fencing weapon having a light flexible blade with a blunt point

Etymology

Verb

Middle English foilen "to trample underfoot," from early French fuller, fouler "to shrink and thicken (cloth), trample underfoot," from Latin fullare "to shrink and thicken (cloth)"

Noun

Middle English foil "leaf," from early French fuille, foille (same meaning), derived from Latin folium "leaf" — related to foliage

Noun

origin unknown

Medical Definition

foil

noun

ˈfȯil

: very thin sheet metal (as of gold or platinum) used especially in filling teeth

Last Updated: 4 Apr 2024 - Updated example sentences

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foil

verb (1)

noun (1)

verb (2)

noun (2)

noun (3)

Synonyms

Examples of foil in a Sentence

Word History

Dictionary Entries Near foil

Cite this Entry

Kids Definition

Medical Definition