IPA: /ˈdrɪəriə/
KK: /ˈdrɪrɪər/
More dull, bleak, or depressing than something else.
The weather today is drearier than it was yesterday.
Drearier → It is formed from "dreary" (from Old English "drēorig", meaning sad or gloomy) and the comparative suffix "-ier" (meaning more). The word "drearier" means more dreary or more gloomy than something else.
Think of the Old English word for sad or gloomy, 'drēorig', to remember that 'drearier' means more gloomy.