What is the Latin word for stiffness?

The usual Latin words for “stiffness” are rigō, dūrus. The right choice depends on the sense; see the distinctions below.

English → Latin

“stiffness” in Latin

rigōto irrigate, to lead, convey or conduct (a liquid to a place); to wet, moisten, water or bedew something with a liquid; dūrushard; rough; harsh; hardy; vigorous

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

stiffness

rigor (rigidity; also in painting, sculpture, etc.): mores asperi or duri (Quint., formal and unpleasant manners).

Quick answer

What is the Latin word for stiffness?: The usual Latin words for “stiffness” are rigō, dūrus. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.