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.

FOIL definition: 1. a very thin sheet of metal, especially used to wrap food in to keep it fresh: 2. a piece of a…. Learn more.

Foil definition: to prevent the success of; frustrate; balk.. See examples of FOIL used in a sentence.

Aluminium foil (or aluminum foil in American English; also called tinfoil) is aluminium prepared in thin metal leaves. The foil is pliable and can be readily bent or wrapped around objects.

One that stands in contrast to and emphasizes the distinctive characteristics of another: "I am resolved my husband shall not be a rival, but a foil to me" (Charlotte Brontë).

Reynolds Wrap Everyday Strength Aluminum Foil Roll, Freezer Safe and Grill Safe, Great for Foil Packets and Home Cooking, 12 Inches Wide, 200 Total Sq. Ft. Pack of 1 30K+ bought in past …

If you refer to one thing or person as a foil for another, you approve of the fact that they contrast with each other and go well together, often in a way that makes the second thing or person …

Nov 1, 2025 · foil (countable and uncountable, plural foils) A very thin sheet of metal. (chiefly uncountable) Thin aluminium / aluminum (or, formerly, tin) used for wrapping food. A thin layer …

Definition of foil noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Some common synonyms of foil are baffle, balk, frustrate, and thwart. While all these words mean "to check or defeat another's plan or block achievement of a goal," foil implies checking or …