1. Not provable
   "it was both unproved and unprovable"

See also: unobvious

Encyclopedia: Unprovable

• uncomplainingly
• uncomplete
• uncompleted
• uncomplicated
• uncomplimentary
• uncompounded
• uncomprehended
• uncomprehending
• uncomprehendingly
• uncomprehensible
• uncompress
• uncompromising
• uncompromisingly
• unconcealed
• unconcern
• unconcerned
• unconcernedly
• unconditional
• unconditionally
• unconditioned
• unconditioned reflex
• unconfessed
• unconfined
• unconfirmed
• unconformable