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

• Lexulous
• Wordscraper
• Wordosaur

ad. in a malicious manner, or for malicious reasons

In a malicious or spiteful manner; with malice, enmity, or ill-will; wantonly; with wilful disregard of duty.

ad. with malice; in a malicious manner

"MoveOn. org is joining Barack Obama and the DNC in maliciously misquoting John McCain, said Republican National Committee spokesman Alex Conant."

capriciously    judiciously