gap-toothedˌgap-ˈtoothed adjective [usually before noun] 
having wide spaces between your teethgap-toothed smile/grin
having wide spaces between your teethgap-toothed smile/grin- unpredictably
- unprepared
- unprepossessing
- unpretentious
- unprincipled
- unprintable
- unproductive
- unprofessional
- unprofessionally
- unprofitable
- unpromising
- unprompted
- unpronounceable
- unprotected
- unproven
- unprovoked
- unpublished
- unpunished
- unputdownable
- unqualified
- unquenchable
- unquestionable
- unquestionably
- unquestioned
- unquestioning