cryp·​tid | \ ˈkrip-təd \
plural cryptids
Definition of cryptid
: an animal (such as Sasquatch or the Loch Ness Monster) that has been claimed to exist but never proven to exist
Contrary to popular belief, cryptids don't have to be supernatural, mythical or even all that strange—though many popular creatures acquire these characteristics as their legends grow.
— Hayley Williams