IPA: /ˈflaʊəriər/
KK: /ˈflaʊəriər/
More full of flowers or decorative in style than something else.
The garden looked flowerier this year than last year, with more blooms and colors.
Flowerier → It is formed from "flower" (from Old English *flōwre*, meaning the bloom of a plant) and "-ier" (a comparative suffix indicating more of a quality). The word "flowerier" means having more flowers or being more flowery in nature.
Think of a plant that has 'more blooms' ('flower') — the '-ier' shows that it has an increased quality, making it 'flowerier'.