IPA: /ˈwɛlθiɪst/
KK: /ˈwɛlθiɪst/
Having the most money or valuable possessions compared to others.
He is one of the wealthiest people in the world.
Comparative: wealthier
Superlative: wealthiest
Wealthiest → It is formed from "wealth" (from Old English *wela*, meaning well-being or prosperity) and the suffix "-iest" (meaning most). The word "wealthiest" means the most prosperous or having the greatest amount of wealth.
Think of 'wealth' as representing prosperity and 'iest' as indicating the highest degree — so the wealthiest person is the one with the most prosperity.
No commonly confused words.