assault — An assault by an army is a strong attack made on an area held by the enemy.
at fault — If someone or something is at fault, they are to blame or are responsible for a particular situation that has gone wrong.
basalt — Basalt is a type of black rock that is produced by volcanoes.
bile salt — a product of a bile acid and a base, functioning as an emulsifier of lipids and fatty acids for absorption in the duodenum.
default — If a person, company, or country defaults on something that they have legally agreed to do, such as paying some money or doing a piece of work before a particular time, they fail to do it.
double salt — a salt that crystallizes as a single substance but ionizes as two distinct salts when dissolved, as carnallite, KMgCl 3 ⋅6H 2 O.
find fault — a defect or imperfection; flaw; failing: a fault in the brakes; a fault in one's character.
perrault — Charles [chahrlz;; French sharl] /tʃɑrlz;; French ʃarl/ (Show IPA), 1628–1703, French poet, critic, and author of fairy tales.
renault — Louis [loo-ee;; French lwee] /ˈlu i;; French lwi/ (Show IPA), 1843–1918, French jurist: Nobel Peace Prize 1907.
rock salt — common salt occurring in extensive, irregular beds in rocklike masses.
sour salt — crystals of citric acid used as a flavoring in foods, carbonated beverages, and pharmaceuticals.
to a fault — a defect or imperfection; flaw; failing: a fault in the brakes; a fault in one's character.
Four-or-more syllable rhymes
celery salt — a seasoning made of salt and ground celery seed
gravity fault — a fault along an inclined plane in which the upper side or hanging wall appears to have moved downward with respect to the lower side or footwall (opposed to reverse fault).
san andreas fault — an active strike-slip fault in W United States, extending from San Francisco to S California and forming the on-land portion of the western margin of the North American Plate.