conspicuously or grossly unconventional or unusual; "restaurants of bizarre design--one like a hat, another like a rabbit"; "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"
disapproval If you describe an idea, argument, or person as flaky, you mean that they are rather eccentric and unreliable. He wondered if the idea wasn't just a little too flaky, a little too outlandish