IPA: /nɒnˈvælɪd/
KK: /nɑnˈvælɪd/
Not acceptable or recognized as correct or legitimate.
The application was rejected because it contained nonvalid information.
Nonvalid → It is formed from "non-" (meaning not) and "validus" (from Latin, meaning strong or effective). The word "nonvalid" means not valid or not effective.
Think of 'non-' meaning 'not' and 'valid' meaning 'strong' or 'effective' — so nonvalid refers to something that is not effective.