Not to be confused with Tufa. Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption.

Tuff is only correct when used as a noun that references a certain type of rock. If you are writing about a specific commercial product that includes tuff as part of a proper name, this usage is also acceptable.

The meaning of TUFF is a rock composed of the finer kinds of volcanic detritus usually fused together by heat.

While tough and tuff sound the same, tough is the established adjective synonymous with resilience and strength. Tuff, on the other hand, is a seldom-used informal alternative or a specific geological term.

Aug 15, 2023 · Tuff as a Preservation Medium for Fossils: Tuff rock can play a crucial role in the preservation of fossils due to its rapid burial and protective properties. When volcanic ash and debris …

Some of the world’s largest deposits of vitric tuff are produced by eruptions through a large number of narrow fissures rather than from volcanic cones. In extensive deposits, tuff may vary greatly not only …

May 17, 2025 · Tuff means something is cool, dope, or exciting. Something that’s tuff is something that’s considered cool, typically in a masculine sense. For example, if a clip of an NBA player doing a 360 …

Explanation of the difference between tough / tuff with example usage of each in context.

Mar 29, 2025 · What Does ‘Tuff’ Mean? ‘Tuff’ is a slang term derived primarily from the American vernacular, often used to express toughness, resilience, or strength. The word is frequently …

Jan 20, 2026 · tuff (countable and uncountable, plural tuffs) (geology) A light porous rock, now especially a rock composed of compacted volcanic ash varying in size from fine sand to coarse gravel.