The quality or state of being gross; coarseness, vulgarity, or the condition of being morally offensive or disgusting.
From Old English 'gross' (thick, coarse) plus the suffix '-ness', creating an abstract noun describing the quality of grossness itself.
The grossness of a joke isn't about its actual size—'gross' meaning crude or vulgar comes from the same root as 'gross' profit, but it traveled a very different cultural path!
Complete word intelligence in one call. Free tier — 50 lookups/day.