IPA: /ˌʌn.səˈlɪs.ɪ.tɪd/
KK: /ʌnˈsɒlɪsɪtɪd/
Not asked for or wanted; something that comes without a request or invitation.
She received unsolicited advice from strangers on the internet.
Unsolicited → It is formed from "un-" (meaning not) and "solicited" (from Latin "sollicitare", meaning to seek or request). The word "unsolicited" means not requested or not asked for, indicating something that comes without a prior request.
Think of 'not' ('un-') asking for something ('sollicitare') — that's why unsolicited means something that is not asked for.