tenuous

/หˆtษ›n.ju.ษ™s/
adjective
  1. 1

    Thin in substance or consistency.

    โ€œFar from being amicable, the numbers seemed to turn their backs on each other, and I couldn't find a pair with even the most tenuous connection.โ€

  2. 2

    Insubstantial.

    โ€œHis argument was not convincing in the debate, considering how tenuous it was.โ€

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