IPA: /ˌɪlɪˈdʒɪtɪmət/
KK: /ɪlɪˈdʒɪtəmət/
Not allowed by law or rules; often refers to something that is not recognized as valid or proper.
The court declared the contract illegitimate due to the lack of proper signatures.
Illegitimate → It is formed from "il-" (meaning not) and "legitimus" (meaning lawful or legitimate). The word describes something that is not lawful or not in accordance with established rules or standards.
Think of 'not' ('il-') and 'lawful' ('legitimus') to remember that 'illegitimate' means something that is not lawful.