If you say that something is nonsensical, you think it is stupid, ridiculous, or untrue.
例句
It seemed to me that Sir Robert's arguments were nonsensical...在我看來，羅伯特爵士的爭辯純屬瞎說。There were no nonsensical promises about reviving the economy.復蘇經濟的承諾是千真萬確的。
"the absurd excuse that the dog ate his homework""that's a cockeyed idea""ask a nonsensical question and get a nonsensical answer""a contribution so small as to be laughable""it is ludicrous to call a cottage a mansion""a preposterous attempt to turn back the pages of history""her conceited assumption of universal interest in her rather dull children was ridiculous"
2. having no intelligible meaning;
"nonsense syllables""a nonsensical jumble of words"