IPA: /nɒnˈmoʊdəl/
KK: /nɑnˈmoʊdəl/
Referring to something that is not related to or does not involve modality, which is the way in which something can be expressed or understood in terms of possibility, necessity, or permission.
The nonmodal approach to the problem allowed for a more straightforward solution.
Nonmodal → It is formed from "non-" (meaning not) and "modal" (from Latin "modus", meaning manner or mode). The word "nonmodal" refers to something that is not related to or does not conform to a particular mode or manner.
Think of 'not' ('non-') related to a specific 'manner' ('modal') — that's why nonmodal means not pertaining to a certain mode.