What is the Latin word for desuetude?

The usual Latin words for “desuetude” are dēsuētūdō, obsolēscō, exolēscō; also obsolētus, exolētus, vetustās. The right choice depends on the sense; see the distinctions below.

English → Latin

“desuetude” in Latin

dēsuētūdōdiscontinuance of a practice or a habit, (law) desuetude obsolēscōto wear out; to fall into disuse; to grow old exolēscōto grow out, to attain one's full size, grow up; to grow to an end, to stop growing obsolētusold, worn out, thrown off; obsolete, out-of-date; common, ordinary, mean, low exolētusmale prostitute vetustāsold age; long existence or duration; antiquity

The English word desuetude itself goes back to Latin dēsuēscō, through dēsuētūdo.

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

desuetude

desuetudo (Liv.; alicujus rei; absolutely, Ov., Julian., Dig.). To fall into desuetude., obsolescere: exolescere (☞ in desuetudinem venire, only in Dig.). What has been lost by desuetude, obsoletus, exoletus, with or without vetustate: oblivione obsoletus (Cic.).

Quick answer

What is the Latin word for desuetude?: The usual Latin words for “desuetude” are dēsuētūdō, obsolēscō, exolēscō; also obsolētus, exolētus, vetustās. 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.