unaware; unconscious; oblivious
Describes a state of being unaware of one's own actions, feelings, or situation, often with a nuance of lacking self-reflection.
He is unaware of his own shortcomings.
Unconscious remarks can sometimes hurt others.
無自覚 focuses narrowly on not noticing one's own state or behavior, while 無意識 more broadly covers any involuntary or automatic action.
Compound of 無 (mu, 'without') and 自覚 (jikaku, 'self-awareness').