different between muddily vs muddly

English

muddy +? -ly

muddily (comparative more muddily, superlative most muddily)

In a muddy manner.
- July 18 2012, Scott Tobias, AV Club The Dark Knight Rises[1]
  Where the Joker preys on our fears of random, irrational acts of terror, Bane has an all-consuming, dictatorial agenda that’s more stable and permanent, a New World Order that’s been planned out with the precision of a military coup. Even his voice, projected muddily though[sic] that steel mask, has the authority of a prison-camp megaphone.

muddle +? -y

muddly (comparative more muddly, superlative most muddly)

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