Synonyms of the word 
TANGENTIAL → DIGRESSIVE - IRRELEVANT
tangential
- adj. Referring to a tangent, moving at a tangent to something.
- adj. Merely touching, positioned as a tangent.
- adj. Only indirectly related.
digressive
- adj. Marked by digression; rambling.
irrelevant
- adj. Not related, not applicable, unimportant, not connected.
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