* Clusters: There are two consonant clusters in "drought":
* dr at the beginning
* ght at the end
* Diphthongs: There are no diphthongs in "drought". Diphthongs are combinations of two vowel sounds within a single syllable, like "ou" in "house" or "oi" in "coin". "Ou" in "drought" is a single vowel sound, not a combination.