Dictionary.com
Thesaurus.com
unfoilable
Derived word form of foil

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Mr. Pyecroft kept his eyes, for the most part, upon the shrewd, fraud-penetrating features of the unfoilable Mr. Mayfair—his own countenance the most truthful that son of Adam ever wore.

From No. 13 Washington Square by Scott, Leroy