give (full/free) rein to somethingEXPRESSto allow an emotion or feeling to be expressed freely 放任〔情感〕，对〔思想〕不加约束 He gave free rein to his imagination. 他任想象信马由缰。
give (full/free) rein to something• You'd be given free rein to run the show how you wanted it.• Despite giving full rein to Laura's inner struggles and torments, Fuentes is far more interested in the grand scale.• So, goes the conspiracy, the Foreign Office can now give free rein to its instinctive Arabism.• The result has been that recent chancellors have been able to give free rein to their tax-reforming ambitions.
→ give (full/free) rein to something at rein1(1)