tangential

Tangential describes something that's not part of the whole. If you make a comment that is tangential to the story you're telling, it's a digression. The story could still be understood without it.

In geometry, a tangent is a line that touches a curve in one spot but doesn't intersect it anywhere else. Tangential means something that goes off in one direction that way and doesn't return. People can feel tangential — as though they're inessential and not relevant to a larger group.

Definitions of tangential
1

adj of superficial relevance if any

“a tangential remark”
Synonyms:
digressive
irrelevant
having no bearing on or connection with the subject at issue

adj of or relating to or acting along or in the direction of a tangent

tangential forces”

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