IPA: /ˈmʌkɪli/
KK: /ˈmʌkɪli/
In a manner that is dirty or muddy.
The children played muckily in the rain, getting their clothes all dirty.
Muckily → The word is derived from "muck" (from Old English *muc*, meaning dirt or filth) and the suffix "-ily" (meaning in a manner). Thus, "muckily" describes something done in a dirty or filthy manner.
Think of 'muck' as dirt or filth, and remember that 'muckily' means doing something in a dirty way.