free rein vs free reign
free rein
Definitions
noun
- the removal of constraints
Examples
He gives me free rein to let fly.
Therefore, litterbugs and those accustomed to spitting on the pavement no longer dare to give free rein to their impulses or else they'd better take along with them a waste-paper basket or a cuspidor whenever they opt for a stroll.
The producer was given a free rein with the script.
