either-or
1 of 2noun
ei·ther-or ˌē-t͟hər-ˈȯr 
also ˌī-
: an unavoidable choice or exclusive division between only two alternatives
either-or
2 of 2adjective
: of or marked by either-or : black-and-white
Word History
First Known Use
Noun
1922, in the meaning defined above
Adjective
1926, in the meaning defined above
- multicolored Asian lady beetle
- multicolors
- multicolour
- multicolours
- multicolumn
- multicompany
- multicomponent
- multiconductor
- multicore
- multicountry
- multicounty
- multicoupler
- multicourse
- multicourses
- multicses
- multiculti
- multicultural
- multiculturalism
- multiculturalisms
- multiculturalist
- multiculturalists
- multiculturally
- multicurrency
- multicuspids
- multicylinder