appurtenant

Something that is appurtenant helps or supports something else. Good physical health is appurtenant to mental well-being.

The adjective appurtenant sounds similar to pertinent, and you can use the two words in the same way, to show that something relates or belongs to something else. Appurtenant shows up a lot in scholarly writing, in situations like a building addition that fits, or is appurtenant to the original structure, or a legal decision about whether a claim of discrimination is appurtenant to a particular law.

Definitions of appurtenant
  1. adjective
    furnishing added support
    synonyms: accessory, adjunct, adjuvant, ancillary, auxiliary
    supportive
    furnishing support or assistance
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