IPA: /ɪkˈskluːʒənɛri/
KK: /ɪkˈskluːʒəˌnɛri/
Relating to the act of leaving something out or not including it.
The exclusionary policies of the club prevented many people from joining.
Exclusionary → It is formed from "ex-" (meaning out) and "claudere" (meaning to close). The word describes something that closes people or things out, thereby preventing their inclusion.
Think of 'closing out' ('ex-' means out and 'claudere' means to close) to remember that 'exclusionary' refers to something that keeps others from being included.