Of, relating to, or involving the act of advocating or speaking in support of something; having the nature of advocacy.
From advocate + -ory (adjective suffix meaning 'relating to'). The -ory ending comes from Latin -orius and creates adjectives from nouns, as in 'sensory' from 'sense.' This word maintains the original Latin sense of calling or supporting.
The -ory suffix is a productivity machine in English—'advocatory,' 'sensory,' 'olfactory'—all built the same way, yet 'advocatory' remained rare while others became common, showing that even parallel word formations can have wildly different fates.
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