uninhibited

1. ADJ If you describe a person or their behaviour as uninhibited, you mean that they express their opinions and feelings openly, and behave as they want to, without worrying what other people think. 不受約束的

...a bold and uninhibited entertainer. …一位大膽且豪放不羈的藝人。

The dancing is uninhibited and as frenzied as an aerobics class. 跳舞都放開了，像健身課那樣盡情。