IPA: /ˈrɪɡliər/
KK: /ˈrɪɡlɪər/
More capable of moving in a twisting or squirming manner than something else.
The wrigglier the worm, the harder it is to catch.
Comparative: wrigglier
Superlative: wriggliest
Wrigglier → It is formed from "wriggle" (from Old English "wrigglian", meaning to twist or squirm) and the comparative suffix "-ier" (meaning more). The word "wrigglier" means more twisted or squirmy than something else.
Think of something that twists or squirms ('wriggle') and remember that 'wrigglier' means it does so even more.