IPA: /ˈmoʊʃənər/
KK: /ˈmoʊʃənər/
A person who proposes a formal suggestion or action, especially in a meeting or assembly.
The motioner proposed a new plan to improve the community park.
Motioner → It is formed from "motion" (from Latin "motio", meaning movement) and "-er" (meaning a person who). The word "motioner" refers to a person who makes a motion or proposal, especially in a formal context.
Think of someone who is responsible for 'movement' ('motion') in a meeting or discussion — that's why a motioner is a person who makes a proposal.