IPA: /ɪnˈɡeɪdʒər/
KK: /ɪnˈɡeɪdʒər/
A person who makes a commitment or enters into an agreement with someone else.
The engager signed the contract to ensure their participation in the project.
Engager → It is formed from "en-" (meaning to cause to be in) and "gager" (from Old French, meaning to pledge or to guarantee). The word "engager" means to cause someone to pledge or commit to something.
Think of someone being 'caused to pledge' or commit to something — 'en-' means to cause to be in, and 'gager' means to pledge.