(used with a plural verb) markings, as initials, slogans, or drawings, written, spray-painted, or sketched on a sidewalk, wall of a building or public restroom, or the like: These graffiti are evidence of the neighborhood's decline.
3.
(used with a singular verb) such markings as a whole or as constituting a particular group: Not much graffiti appears around here these days.
Origin: 1850–55; < Italian, plural of graffito incised inscription or design, derivative with -ito-ite2 of graffiare to scratch, perhaps influenced by presumed Latin *graphīre to write; both probably derivative of Latin graphium stylus < Greek grapheîon;compare graphic, grapho-, graft1
Related forms
graf·fi·tist, noun
Usage note In formal speech and writing graffiti takes a plural verb. In less formal contexts it is sometimes considered a mass noun and is used with a singular verb. The singular graffito is found mostly in archaeological and other technical writing.