IPA: /ˈɡʌstləs/
KK: /ˈgʌstləs/
Lacking flavor or taste; dull and uninteresting.
The soup was gustless, leaving everyone unsatisfied with the meal.
Comparative: gustlesser
Superlative: gustlessest
Gustless → It is formed from "gust" (from Latin "gustus", meaning taste or flavor) and "-less" (meaning without). The word "gustless" means lacking taste or flavor.
Think of 'gust' as a flavor or taste, and remember that 'gustless' means without flavor.