heedless
adjectiveUK /ˈhiːdləs/
US /ˈhiːdləs/
Not paying attention to what is happening around you.
The heedless boy ran into the street without looking.
OTHER MEANINGS
2. Showing no concern for danger or consequences.
She was heedless of the warnings and went swimming anyway.
3. Failing to give proper attention to something important.
He was heedless of his health and never exercised.
4. Acting without thinking about other people's feelings.
His heedless remarks hurt his friend's feelings.