- flimsy, slight, tenuous, thin - having little substance or significance; "a flimsy excuse"; "slight evidence"; "a tenuous argument"; "a thin plot"
Antonym: strong (indirect, via weak)
- tenuous - having thin consistency; "a tenuous fluid"
Antonym: thick (indirect, via thin)
- tenuous - very thin in gauge or diameter; "a tenuous thread"
Antonym: thick (indirect, via thin)