IPA: //ˈmʌstæʃt//
KK: /ˈmʌstæʃt/
Having hair on the upper lip, often styled in various ways.
The moustached man smiled as he walked by.
Comparative: more moustached
Superlative: most moustached
Moustached → It is formed from "moustache" (from Old French *moustache*, meaning the hair growing on the upper lip) and "-ed" (a suffix used to form the past participle or adjective). The word "moustached" describes someone who has hair on their upper lip, indicating the presence of a moustache.
Think of the word 'moustache' which refers to the hair on the upper lip, and remember that 'moustached' means having that hair.