tenuous

English

Irregularly formed from Latin tenuis (“thin, slight”) +‎ -ous. Compare tenuious.

tenuous (comparative more tenuous, superlative most tenuous)

Thin in substance or consistency.
Synonyms: delicate, gossamer; see also Thesaurus:fragile

The aether was thought to be of tenuous strands.

Far 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.
Insubstantial.
Synonyms: ethereal; see also Thesaurus:insubstantial

His argument was not convincing in the debate, considering how tenuous it was.
- July 18 2012, Scott Tobias, AV Club The Dark Knight Rises[1]
  Picking up eight years after The Dark Knight left off, the film finds Gotham enjoying a tenuous peace based on Harvey Dent’s moral ideals rather than the ugly truth of his demise.
Precarious, dependent upon unreliable things.
- 1996 September, “Moral Clashes”, in Gay Community News, page 4:
  Is this connected to "pro-gay" Governor Weld's contract with some in the community—gay rights in exchange for keeping sex out of the picture? Those willing to make this 'bargain with the devil' depend for their tenuous status on keeping the rest of us in line, moralizing about the need to behave "beyond reproach," clarifying to the straight public that there are good gays and bad ones.

thin in substance or consistency

insubstantial