1. 不动人的：unimportant 不重要的 | unimposing 不动人的 | unimpressible 不可印的
2. 没有威信的：unimportantunimportance 不重要 | unimposing 没有威信的 | unimposing 不堂皇的
3. 不庄严的：unimposing 不堂皇的 | unimposing 不庄严的 | unimpregnated 未浸染的
4. 不堂皇的：unimposing 没有威信的 | unimposing 不堂皇的 | unimposing 不庄严的
1. unimposing
1. I arrived on a typically warm August day, and found the overall appearance of the building unimposing and simple in its design.
2. Raoul Wallenberg was a minor official of a neutral country, with an unimposing appearance and gentle manner.
adj
1. unimposing
1. lacking in impressiveness
e.g. on the whole the results of this system are unimposing