Conspicuously or grossly unconventional or unusual. Synonyms: bizarre, eccentric, flakey, flaky, freakish, freaky, gonzo, off-the-wall, outlandish. "Famed for his eccentric spelling" , "A freakish combination of styles" , "His off-the-wall antics" , "The outlandish clothes of teenagers" , "Outre and affected stage antics"