humourless
adj. 缺乏幽默感的；一本正经的
例句
It is a tedious, humourless load of crap.
这简直就是一堆乏味、无趣的臭狗屎。
《柯林斯英汉双解大词典》
This man was as humourless as a dictionary.
这个男人像本字典一样一本正经。
Mr Obama comes across as fluent and well-informed but also somewhat detached and humourless.
奥巴马先生表现得非常流畅和知识广博，但是就有那么一点超然和无趣。
