(a.) Capable of being touched; tangible.

apparent appreciable arresting believable certain clear clear as crystal colorable concrete credible crystal-clear detectable discernible distinct evident explicit express indisputable indubitable manifest material noticeable observable obvious open-and-shut ostensible patent perceivable perceptible perspicuous plain plain as day plausible ponderable positive real remarkable seeable seeming self-evident self-explaining self-explanatory sensible solid straightforward striking substantial substantive sure tactile tangible to be seen touchable unequivocal unmistakable visible weighable