unasked
adj. 未受请求的;未受请托的;未经要求的
例句
He came to the party unasked.
他未经邀请就来参加聚会了。
《牛津词典》
She brought him, unasked, the relevant file.
她主动把有关案卷带给了他。
His advice, offered to her unasked, was to stay home and make the best of things.
他主动向她提出建议:待在家里苦中作乐。
《柯林斯英汉双解大词典》