Meaning of Unperceived
Unknown / অজানা / अज्ञात
to become aware of, know, or identify by means of the senses: I perceived an object looming through the mist.
to recognize, discern, envision, or understand: I perceive a note of sarcasm in your voice. This is a nice idea but I perceive difficulties in putting it into practice.
to become aware of (something) through the senses, esp the sight; recognize or observe
(transitive; may take a clause as object) to come to comprehend; grasp