This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. To shout louder or for longer than another.

v. To merit the most attention or praise.

v. shout louder than

"When called on it they become the victim and very effectively outshout everyone until the issue goes away."

surpass    outmatch    outstrip    outgo    outdo