tangible: perceptible by touch.
intangible: unable to be touched or grasped; not having physical presence.
palpable: (of a feeling or atmosphere) so intense as to seem almost tangible.
impalpable: unable to be felt by touch.
perceptible: (especially of a slight movement or change of state) able to be seen or noticed.
imperceptible: impossible to perceive.
palatable: (of food or drink) pleasant to taste.
untouchable: not able or allowing to be touched or affected.
delectable: (of food or drink) delicious.
sensible: (of a statement or course of action) chosen in accordance with wisdom or prudence. This word is about wisdom. It has nothing to do with whether one can sense something or not.
sensational: (of an event, a person, or a piece of information) causing great public interest and excitement.
insensible: without one’s mental faculties, typically a result of violence or intoxication; unconscious.
visible: able to be seen
invisible: unable to be seen; not visible to the eye.
audible: able to be heard.
inaudible: unable to be heard.
odorous: having or giving off a smell.