foxed
verb
Definitions
To trick, fool or outwit (someone) by cunning or ingenuity.
To confuse or baffle (someone).
Example: This crossword puzzle has completely foxed me.
To act slyly or craftily.
To discolour paper. Fox marks are spots on paper caused by humidity. (See foxing.)
Example: The pages of the book show distinct foxing.
adjective
Definitions
Of paper, having yellowish-brown stains.