tenuity

noun

1
the quality of lacking intensity or substance
a shrill yet sweet tenuity of voice"- Nathaniel Hawthorne
2
a rarified quality
the tenuity of the upper atmosphere
3
relatively small dimension through an object as opposed to its length or width
the tenuity of a hair
the thinness of a rope

Also useful for “tenuity”:Unscrambler— Rearrange the letters in “tenuity”