free rein
US /friː reɪn/
UK /friː reɪn/

1.
完全的自由, 自由發揮
complete freedom of action or decision
:
•
The manager gave his team free rein on the new project.
經理在新專案中給了他的團隊完全的自由。
•
Artists were given free rein to express themselves.
藝術家們被賦予了充分的自由來表達自己。