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1.
Adjective: A terms to describe the characteristics of an individual who is thoughtless, inconsiderate, offensive of unpleasant. Such people have no regard for others and are deeply self-obsessed deviants with a thinly disguised persecution complex. Fucktards.

Adverb: Fuckoffishly.
"Dan can be so fuckoffish about things some times, he always behaves fuckoffishly when you ask him a direct question. He must be IQR qualified and if he isn't he should be."
by Vengeful Spirit January 24, 2012