Tending to exclude or serving to exclude; having the quality or effect of keeping people or things out.
From 'exclude' + '-ory' (tending to, serving to). The '-ory' suffix creates an adjective describing what something tends to do or its function.
The 'exclusory rule' in criminal law prevents police from using illegally obtained evidence in court—it's a legal mechanism that excludes evidence to protect people's rights, showing how exclusion can sometimes be fair and necessary.
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