IPA: //ʌn.æmˈbɪv.ənt//
KK: /ʌnˈæmbɪvənt/
Showing a clear and definite opinion or feeling without any confusion or mixed emotions.
Her unambivalent support for the project made it easier for the team to move forward confidently.
Unambivalent → It is formed from "un-" (meaning not) and "ambivalent" (from Latin "ambivalens", meaning having mixed feelings). The word "unambivalent" means not having mixed feelings or being clear in one's feelings or attitudes.
Think of 'not' ('un-') having 'mixed feelings' ('ambivalent') — that's why unambivalent means being clear and decisive.