What is the X in X-mas?

15

18

Scrabble
Words With Friends

- factoid
- factor
- factor analysis
- factor cost
- factor group
- factor i
- factor ii
- factor iii
- factor in
- factor iv
- factor ix
- factor of adhesion
- factor of production
- factor of safety
- factor v
- factor vii
- factor viii
- factor x
- factor xi
- factor xii
- factor xiii
- factorage
- factorial
- factorial experiment
- factoring
- factoring into
- factorize
- factors of production
- factory
- factory farm
- factory farming
- factory floor
- factory outlet
- factory price
- factory ship
- factory system
- factotum
- facts
- facts and figures
- facts of life
- factsheet
- factual
- factualism
- factum
- facture
- facula
- facultative
- facultative anaerobe
- facultative apomict
- facultative hyperopia
- facultative parasite