IPA: /ˈnuːmənəl/
KK: /ˈnuːmənəl/
Relating to things as they exist independently of perception or experience.
The philosopher discussed the noumenal world, which is beyond human understanding.
Noumenal is derived from "noumenon" (from Greek "noumenon", meaning that which is known or perceived) and the suffix "-al" (meaning pertaining to). The term "noumenal" refers to that which pertains to the noumenon, or the thing as it is in itself, independent of perception.
Think of 'noumenon' as referring to something that is 'known' or 'perceived' — so 'noumenal' means relating to that knowledge or perception.