foxed
foxed
adjective
(Of paper or books) discoloured with yellowish-brown spots, typically due to age or dampness.
"The antique book had several foxed pages."
Thesaurus
Synonyms: dodger, slyboots, fox, George Fox, Charles James Fox, fob, trick, pull a fast one on, play a trick on, play a joke on, play tricks, flim-flam