WordReference Random House Unabridged Dictionary of American English © 2026
-ior,
- a suffix of comparatives appearing in words of Latin origin:superior;ulterior;junior.
- Latin -ior, masculine and feminine comparative adjective, adjectival suffix
'-ior' also found in these entries (note: many are not synonyms or translations):
animal behavior
- antero-
- appetitive behavior
- behavior
- behavior modification
- behavior pattern
- behavior therapy
- cognitive therapy
- collective behavior
- consummatory behavior
- Democritus Junior
- deteriorate
- good behavior
- inferior
- inferoanterior
- interbehavior
- interior
- interoceptor
- junior college
- junior counsel
- junior high school
- Junior League
- junior miss
- junior school
- junior varsity
- lieutenant junior grade
- prejunior
- undersavior
- World Savior
- senior moment
- semioratorical
- semiorthodox
- senior
- senior citizen
- senior high school
- stereotypy
- subjunior
- superior