unsolicited

/ˌʌn.səˈlɪs.ɪ.t̬ɪd/
Something that is unsolicited has been given without being asked for and may not have been wanted. 未被请求的; 主动提供的

例：
She’s always full of unsolicited advice.
她总是未被请求即提供一大堆建议。