IPA: //ˈdændiˌækəl//
KK: /ˈdændiˌækl/
Relating to or characteristic of a person who places particular importance on physical appearance, style, and elegance.
He dressed in a dandiacal manner, always choosing the finest clothes and accessories.
Dandiacal is derived from "dandy" (originating from the Scottish word "dandy" meaning a man who is excessively concerned with his appearance) and the suffix "-ical" (meaning pertaining to or relating to). The word "dandiacal" refers to something that is characteristic of or relating to a dandy, particularly in terms of style or fashion.
Think of a 'dandy' as someone very concerned with their appearance, and the '-ical' means relating to. So, dandiacal describes something that relates to that stylish, appearance-focused attitude.