nonsensical
🇺🇸
/ˌnɑːnˈsensɪkl/
🇬🇧
/ˌnɒnˈsensɪkl/
Something that does not make sense or is illogical.
The idea that the moon is made of cheese is completely nonsensical.
月がチーズでできているという考え方は完全に意味がありません。