

He drove in a reckless manner.
Acting without thinking about the consequences; careless.
She made a reckless decision to skip school.
His reckless behavior got him into trouble.
They took a reckless risk by hiking without gear.
reckless driving
reckless abandon
reckless behavior
careless
rash
impulsive
Her reckless behavior put everyone at risk.
Showing a lack of concern for safety or the well-being of others.
He made a reckless decision to drive without a seatbelt.
Her reckless driving caused a serious accident.
They took a reckless risk by hiking in the storm.
reckless driving
reckless behavior
reckless abandon
careless
foolhardy
imprudent