exclusionary
UK: ɪkˈskluːʒənəri | US: ɪkˈskluːʒəneri
Definition
adj. relating to or characterized by exclusion, especially the practice of excluding certain groups or individuals
adj. (law) designating rules or policies that prevent participation or access
Structure
ex <out>clus <shut>ionary <adjective suffix>
Etymology
The word "exclusionary" derives from Latin roots:
- "ex-" (out) + "cludere" (to shut), forming "excludere" (to shut out).
 - The suffix "-ion" turns the verb into a noun ("exclusion"), and "-ary" adapts it into an adjective.
The term evolved in English to describe systems or behaviors that actively shut out or bar participation, reflecting its literal roots in physical or social barriers. 
Examples
The club faced criticism for its exclusionary membership policies.
The court ruled the law was unconstitutionally exclusionary.
Exclusionary zoning limits affordable housing in urban areas.
Her speech challenged the exclusionary practices in academia.
The policy was deemed exclusionary toward immigrants.