In historical linguistics, vowel breaking, vowel fracture, or diphthongization is the sound change of a monophthong into a diphthong or triphthong.

What is the meaning of Diphthongization?

intransitive verb. of a simple vowel : to change into a diphthong. transitive verb. : to pronounce as a diphthong.

What is quibbling speech?

: to argue or complain about small and unimportant things. quibble. noun. Kids Definition of quibble (Entry 2 of 2) : a small and usually unimportant complaint, criticism, or argument.