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1. Informal
a. A playful, silly, or outlandish person.
b. A foolish, incompetent, or stupid person.
2. Slang A barbiturate or tranquilizer pill, especially when taken for nonmedical purposes.
adj. Informal
Silly or outlandish: "Underneath his goofball braggadocio lies a kind of purity" (David Ansen).


1. (Pharmacology) a barbiturate sleeping pill
2. a fool



n. Slang.
1. an incompetent or silly person.
2. a pill containing a barbiturate or a tranquilizing drug.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.goofball - a man who is a stupid incompetent foolgoofball - a man who is a stupid incompetent fool
fool, muggins, saphead, tomfool, sap - a person who lacks good judgment
2.goofball - a person who amuses others by ridiculous behaviorgoofball - a person who amuses others by ridiculous behavior
comedian, comic - a professional performer who tells jokes and performs comical acts
harlequin - a clown or buffoon (after the Harlequin character in the commedia dell'arte)
jester, motley fool, fool - a professional clown employed to entertain a king or nobleman in the Middle Ages
whiteface - a clown whose face is covered with white make-up
zany - a buffoon in one of the old comedies; imitates others for ludicrous effect


n (esp US inf) → Doofkopp m (sl)
References in periodicals archive ?
Diaz then gestured at McGregor and added: "All I see is this guy training in the park with goofballs in ponytails."
After plundering my course syllabus and polling some of my favorite goofballs, I've got a solid but by no means exhaustive list: playing charades.
I wrote 24 new acronyms, each of which has a different derogatory word in the plural for the characters doing the action--buffoons, lunks, goofballs, etc.--and uses the present participle (-ing) of a verb.