tangential

/T AE0 N JH EH1 N CH AH0 L/
adjective
  1. 1

    Referring to a tangent, moving at a tangent to something.

  2. 2

    Merely touching, positioned as a tangent.

  3. 3

    Only indirectly related.

    โ€œThat subject is tangential to our discussion, and we cannot let it distract us.โ€

Source: https://en.wiktionary.org/wiki/tangential