IPA: /ˌʌn.kənˈvɪnst/
KK: /ʌnˈkənˌvɪnst/
Not feeling sure or certain about something; lacking belief or confidence in it.
She remained unconvinced by his explanation of the situation.
Unconvinced → It is formed from "un-" (meaning not) and "convinced" (from Latin "convincere", meaning to overcome or prove). The word "unconvinced" means not having been persuaded or proven to believe something.
Think of 'not' ('un-') being applied to someone who has 'overcome' or 'proven' something ('convincere'). This helps you remember that 'unconvinced' means someone who has not been persuaded.