Foil, vb. 1) to defeat: Ven. 114. Sonn. 25, 10. As I, 1, 136. I, 2, 199. II, 2, 14. H6C V, 4, 42. Troil. I, 3, 372. Cor. I, 9, 48.
2) to make inefficacious, to undo, to mar: “she framed the love, and yet she --ed the framing,” Pilgr. 99. “when light-winged toys of feathered Cupid f. with wanton dulness my speculative and officed instruments,” Oth. I, 3, 270 (Qq foyles, Ff seel). and must not f. the precious note of it (the crown) “with a base slave,” Cymb. II, 3, 126 (M. Edd. soil).