IPA: /ˈslaɪmiər/
KK: /ˈslɪmɪər/
Having a slippery or wet texture, often unpleasant to touch; this form indicates a greater degree of that quality compared to the base form.
The fish was even slimier than I expected when I caught it.
Comparative: slimier
Superlative: slimiest
Slimier → It is formed from "slimy" (from Old English *slīmig*, meaning covered with slime) and the comparative suffix "-er" (meaning more). The word "slimier" means more covered with slime or having a greater degree of sliminess.
Think of something that is 'more covered with slime' — 'slimy' describes the texture, and '-er' indicates a comparison, so slimier means it has even more of that slippery quality.