IPA: //ʌnˈwɪtɪŋ//
KK: /ʌnˈwɪtɪŋ/
Not aware of something; not knowing or intentional about it.
She was an unwitting participant in the study, unaware of the true purpose of the experiment.
Unwitting → It is formed from "un-" (meaning not) and "witting" (from Old English "witan", meaning to know). The word "unwitting" means not knowing or unaware of something.
Think of 'not knowing' ('un-') something that you should be aware of — that's what unwitting means.