As nouns the difference between mudder and muddler
is that mudder is mother / mamma (as in deine mudder "yo mamma") while muddler is a person or thing that muddles.
mudder
English
Noun
(
en noun)
A person who participates in MUD games
References
*OED 2003 muddler
Noun
(
en noun)
A person or thing that muddles.
A tool used in muddling, used to mash and mix.
Related terms
* muddle
* muddling