IPA: /ˈbɪt.i.ər/
KK: /ˈbɪtɪər/
Having a smaller size or being made up of smaller parts; often used to describe something that is fragmented or not whole.
The bittier pieces of the puzzle were harder to fit together.
Bittier → It is formed from "bitter" (from Old English "bitter", meaning having a sharp, pungent taste) and the comparative suffix "-er" (meaning more). The word "bittier" means having a more intense bitter taste than something else.
Think of something that tastes 'more sharp' or 'more pungent' — 'bitter' describes that strong taste, and '-er' indicates it's even more so.