n.
Function: noun
Etymology: Italian, plural of graffito
Date: 1945
: usu. unauthorized writing or drawing on a public surface
usage Graffiti , which also serves as the plural of graffito , is commonly used as a singular mass noun < graffiti ⋯ was depressing people who rode the subways ― New Yorker > < graffiti comes in various styles ― S. K. Oberbeck>. This use is well established although not yet as well established as the mass-noun use of data. Use of graffiti as a singular count noun is still quite rare and is not standard.