unimpressive
adj. 无印象的；给人印象不深的；不惹人注意的
反义词
参考例子
1.Germany won an unimpressive friendly 1-0 against China. Robert Huth was a half-time substitute, when the score was 0-0.
德国队在情谊赛中以不尽如人意的表现1-0战胜中国队，胡特下半场替补上场，当时场上比分0-0。
2.It's unimpressive in my memory that what i had written, I can remember that the scent of flowers sharp and brisk and charming.
不记得自己写了什么，只记得有迷迭的花香袭来，清新而又迷人。
3.The Lakers' problem is bringing it every night. As in Saturday's unimpressive win in Denver, the game appeared to mean more to the other team.
湖人的麻烦每一个夜晚都困扰着他们。就像周六对阵丹佛，赢得很吃力，比赛暴露了比其他球队更多的弱点。
英文解释
adj.
1.not capable of impressing
网络释义
unimpressive
无印象的; 印象淡薄的; 给人印象不深的; 平常的;
mediocre unimpressive nondescript prosaic undistinguished
平凡的、平庸的;