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

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n. A male ass or donkey.

n. A foolish or stupid person; a blockhead: "You've acted like an irrational jackass and it's time you stopped” ( Margaret Truman).

n. A male donkey.

n. A foolish or stupid person.

n. An inappropriately rude or obnoxious person.

proper-noun. A jack and an ace as a starting hand in Texas hold 'em due to phonetic similarity

v. To behave very obnoxiously.

n. The male ass; a donkey.

n. A conceited dolt; a perverse blockhead; -- disparaging and offensive.

n. A male ass; a jack.

n. Hence A very stupid or ignorant person: used in contempt.

n. Nautical, same as hawse-bag.

n. male donkey

n. a man who is a stupid incompetent fool

"Note to editor: If I can't say the word 'jackass' substitute the word 'jerk', but I really do mean 'jackass'."

jackass rabbit   

ass    saphead    sap    tomfool    fool    muggins   

jackass copal    laughing jackass   

donkey    blockhead    jack    jerk    obnoxious    asshole    bastard    bitch   

oaf    asshole    twit    sonofabitch    creatur    soundbite    twat    blankness    nincompoop    seat-warmer