Languages I / English Vowels II: Diphthongs and Reduction
Practice question · True or false

The centring diphthongs of RP are stable and show no signs of change.

Hints
  1. Consider the vowel of cure among younger speakers.
  2. It is widely merging with the vowel of thought.
Show the answer

False

Why

False. The cure diphthong is receding for many younger RP speakers, merging with the vowel of thought, and the square diphthong is monophthongising for many as well. The centring set is the least stable part of the inventory, which fits its origin as a by-product of r-loss.

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