To be very lazy and idle, especially when immediate action is required.
shoot first and ask questions later
To take hasty, immediate action with serious consequences, without fir …
sit on one's hands
To remain idle when action is needed, perhaps because of fear, ignoran …
sit tight
To wait patiently; to take no action; to remain quiet or relatively mo …
sit still
To accept, tolerate, or acquiesce.
sit in for
To substitute; to take somebody's place.