triphthong /trifˈthong, tripˈ/

1. A combination of three vowel sounds in one syllable (phonetics)
2. (loosely) a trigraph

triphthongal /-thongˈgl/ adjective

• guard
• guardable
• guardage
• guardages
• guardant
• guardants
• guard-book
• guard-books
• guard cell
• guard cells
• guard dog
• guard dogs
• guarded
• guardedly
• guardedness
• guardednesses
• guardee
• guardees
• guard hair
• imbossing
• imbower
• imbowered
• imbowering
• imbowers
• imbrangle