IPA: /ˈtɒplɒfti/
KK: /tɑpˈlɔfti/
Having an arrogant or superior attitude; behaving in a way that shows one thinks they are better than others.
His toplofty remarks made it clear that he considered himself above everyone else.
Comparative: more toplofty
Superlative: most toplofty
Toplofty is formed from "top" (meaning the highest point) and "lofty" (from Old English "loft", meaning elevated or high). The word "toplofty" describes something that is very high or elevated, often in a grand or exaggerated manner.
Think of something at the 'top' being 'elevated' — that's why toplofty means very high or grand.
No commonly confused words.