IPA: /ˌʌn.dɪˈzaɪə.bli/
KK: /ʌndɪˈzaɪrəbli/
In a way that is not wanted or is considered bad.
The project was affected undesirably by the sudden changes in management.
Undesirably → It is formed from "un-" (meaning not) and "desirable" (from Latin "desiderabilis", meaning worthy of desire) and the suffix "-ly" (meaning in a manner). The word "undesirably" means in a manner that is not worthy of desire or not wanted.
Think of 'not' ('un-') and something that is 'worthy of desire' ('desirable') — when something is done 'in a manner' ('-ly') that is not wanted, it is considered undesirable.