IPA: /rɪˈdʒɛktər/
KK: /rɪˈdʒɛktər/
A person or thing that refuses to accept, believe in, or agree with something.
The rejector of the proposal explained their reasons clearly.
Rejector → It is formed from "re-" (meaning back or again) and "jacere" (meaning to throw). The word "rejector" refers to someone who throws something back or refuses it.
Think of someone who 'throws back' ('re-') something that is offered — that's why a rejector is someone who refuses or dismisses.