Adjective has 1 sense

• off-the-wall(s = adj.all) bizarre, eccentric, flakey, flaky, freakish, freaky, gonzo, outlandish, outre - conspicuously or grossly unconventional or unusual; "a freakish combination of styles"; "famed for his eccentric spelling"; "his off-the-wall antics"; "outre and affected stage antics"; "restaurants of bizarre design--one like a hat, another like a rabbit"; "the outlandish clothes of teenagers"