qua·ter·cen·ten·a·ry 
(kwŏt′ər-sĕn-tĕnə-rē, -sĕntə-nĕr′ē)
(kwŏt′ər-sĕn-tĕnə-rē, -sĕntə-nĕr′ē)n. pl. qua·ter·cen·ten·a·ries
A quadricentennial.
[Latin quater, four times; see QUATERNARY + CENTENARY.]
- unalterably
- unambiguous
- unambiguously
- un-American
- Unami
- Unamuno
- unanalyzable
- unanalyzably
- unaneled
- unanimity
- unanimous
- unanimously
- unanimousness
- unannounced
- unanswerability
- unanswerable
- unanswerableness
- unanswerably
- unanticipated
- unanticipatedly
- unapologetic
- unapologetically
- unappealable
- unappealably
- unappealing