thready

adjective, thread·i·er, thread·i·est.

1. consisting of or resembling a thread or threads; fibrous; filamentous.
2. stringy or viscid, as a liquid.
3. (of the pulse) thin and feeble.
4. (of sound, the voice, etc.) lacking fullness; weak; feeble.

adjective threadier or threadiest

1. of, relating to, or resembling a thread or threads
2. med (of the pulse) barely perceptible; weak; fine
3. sounding thin, weak, or reedya thready tenor