obvious Antonyms - page 2

questionable puzzling problematical nebular open to dispute undercover smoggy unproven unprovable polysemantic pinto on trial imprecise unclear clear as mud amorphic top secret transmundane as clear as mud untellable unstated unsolved unreported unremarked unpublished unperceivable unavowed unascertainable ultramicroscopic uneventful traceless unnoticeable arty unfathomable unintelligible wily vestigial vague unseen unsearchable unobtrusive unexpected underhanded back room backroom nonvisual unspoken multifaceted little-known brain surgery