One who is lacking perception or insight.

अविवेकी

English Usage: His impercipient attitude prevented him from understanding the complexities of the situation.

Hindi Usage: उसका अविवेकी रवैया उसे स्थिति की जटिलताओं को समझने से रोकता था।

Lacking perception or awareness.

अनजान

English Usage: She remained impercipient to the changes happening around her.

Hindi Usage: वह अपने चारों ओर हो रहे परिवर्तनों के प्रति अनजान बनी रही।