Vowel whose quality does not change over the duration of the vowel is called a monophthong. Monophthongs are sometimes called "pure" or "stable" vowels. A vowel sound that glides from one quality to another is called a diphthong, and a vowel sound that glides successively through three qualities is a triphthong. All languages have monophthongs and many languages have diphthongs, but triphthongs or vowel sounds with even more target qualities are relatively rare cross-linguistically. English has all three types: the vowel sound in "hit" is a monophthong , the vowel sound in "boy" is in most dialects a diphthong , and
Garhwali language in the language which makes the words distinctive than other. However diphthongs vary dialect by dialect. Triphthongs are less commonly found in the language. The most common word where a triphthong may occur is ह्वाउन [English: may be] /hɯɔʊn/ (in standard Garhwali) or /hɯaʊn/ (in some dialects). However many speakers can't realize the presence of triphthongs. Other triphthongs might be discovered if more academic research were done on the language. य्, र्, ल्, ळ्, व्, स् and the nasal consonants (म्, न्, ञ्, ङ्, ण्) have no aspirated consonantal sound. The Garhwali speakers are most familiar with allophones in the