IPA: /ɪmˈpɜːrsɪpɪənt/
KK: /ɪmˈpɜːrsɪpɪənt/
Not able to perceive or understand things; lacking awareness or insight.
His impercipient attitude made it difficult for him to notice the problems around him.
Impercipient is formed from "im-" (meaning not) and "percipere" (meaning to perceive or understand). The word describes someone who is not able to perceive or understand things clearly.
Think of 'not' ('im-') being combined with 'to perceive' ('percipere') — this helps you remember that impercipient means someone who cannot perceive or understand.