freaky

adjectives

strange and somewhat frightening

"the whole experience was really freaky"

freaky

is similar to

being definitely out of the ordinary and unexpected; slightly odd or even a bit weird

"a strange exaltation that was indefinable"; "a strange fantastical mind"; "what a strange sense of humor she has"

strange, unusual

domain usage

a characteristic language of a particular group (as among thieves)

"they don't speak our lingo"

argot, cant, jargon, lingo, patois, slang, vernacular

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"

bizarre, eccentric, flakey, flaky, freakish, freaky, gonzo, off-the-wall, outlandish, outre