Wild
Rough
い adjective
荒い is rough. Double that to 荒々しい and you have the same thing: wild or rough.
The reading comes from 荒い. Since you already know that 々 means it repeats, you already know this reading!
彼は荒々しい声で、寝ている時に奥さんが毎晩顔に小便を掛けてくることに怒り心頭していることを公言しました。
In a wild voice he proclaimed that he was totally “pissed off” at his wife for "pissing" on his face every night while he was sleeping.
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