Graffiti Graffiti Graffiti (both singular and plural; the singular "graffito" is very rare in English except in archeology) is writing or drawings made on a wall or other surface, usually without permission and within public view. Graffiti ranges from simple written words to elaborate wall paintings, and it has existed since ancient times, with examples dating back to ancient Egypt, ancient Greece, and the Roman Empire. In modern times, paint (particularly spray paint) and marker pens have become the most commonly used graffiti materials. In most countries, marking or painting property without the property owner's permission is considered defacement and vandalism,
Plural form of words ending in -us follows standard Latin rules for pluralization and becomes "cacti", which has become the prevalent usage in English. Regardless, "cactus" is popularly used as both singular and plural, and is cited as both singular and plural. "Cactuses" is also an acceptable plural in English. Facetious mock-erudite plurals in "-i" or even "-ii" are sometimes found for words ending with a sound (vaguely) similar to "-us". Examples are "stewardi" (supposed plural of "stewardess") and "Elvi" (as a plural for "Elvis" imitators). The Toyota corporation has determined that their "Prius" model should have the plural form "Prii", even though the Latin word "prius"