She remembered her ineffectual efforts to comfort him.
她记得自己曾努力去安慰他,但徒劳无功。
—ineffectuallyadverbadv
Examples from the Corpus
ineffectual• All of their attempts to come to an agreement has been ineffectual.• He's a nice enough man, but rather ineffectual as a team captain.• The police were completely ineffectual in this matter.• The problems were made worse by the ineffectual political leadership of the coalition.