consist of a combination of two vowel
sounds,
is a combination of two adjacent vowel
sounds
within
the
same
syllable.
Technically, a diphthong is a vowel with
two different targets: that is, the tongue
(and/or
other
apparatus)
parts
moves
of
the
during
speech
the
pronunciation of the vowel. In many
dialects of English, the phrase no highway
cowboys /ˌnoʊ ˈhaɪweɪ ˈkaʊbɔɪz/ has five
distinct diphthongs, one in every syllable .