IPA: /ˈwɪkɪdər/
KK: /ˈwɪkɪdər/
More evil or morally wrong than something else.
His actions were even wickeder than before, shocking everyone around him.
Comparative: wickeder
Superlative: wickedest
Wickeder → It is formed from "wicked" (from Old English "wicca", meaning sorcerer or evil) and the comparative suffix "-er" (meaning more). The word "wickeder" means more wicked or more evil than something else.
Think of 'wicked' as relating to evil or bad, and the '-er' indicates a comparison, so 'wickeder' means more evil.