Extra
Five letter words with second letter x are:excelexertextraaxiomexpel
oxeye
An eight letter word with x as a second letter is exciting.
skill
Extra is a five letter word for surplus. E X T R A.
experienceexperimentexplosionsexpressionexfoliatedexcitementexultationexhalationexpirationexaltation
epoxy
epoxy, prexy
epoxy, prexy, proxy
Xerox, xenon
use a dictionary
Epoxy or proxy?