- capable of being perceived by the mind or senses; "a perceptible limp"; "easily perceptible sounds"; "perceptible changes in behavior"
- detectable: easily seen or detected; "a detectable note of sarcasm"; "he continued after a perceptible pause"
- (perceptibly) in a noticeable manner; "he changed noticeably over the years"
- Able to be perceived, sensed, or discerned
- invisible, unnoticeable, indiscernible