Closing diphthongs end with a glide towards / ɪ / or towards / ʊ /. The glide is towards a higher position in the mouth.
Closing diphthongs ending in / ɪ /
The glide begins in the position for / e /, moving up and slightly back towards / ɪ /. The lips are spread.
Examples:
cake, way, weigh, say, pain, they, vein
The glide begins in the position for / ɔ: /, moving up and forward towards / ɪ /. The lips start open and rounded and change to neutral.
Examples: toy, avoid, voice, enjoy, boy
The glide begins in the position for / e /, moving back towards / ə /. The lips remain neutrally open.
Examples:
where, wear, chair, dare, stare, there