désuet

Etymology
19th century,, past participle of. The traditional pronunciation is that with because the Latin verb is from, the first ⟨s⟩ being of the root. However, French-speakers tend to analyse it as, which gives rise to the now predominant form with.

Adjective

 * 1) obsolete, out of use, no longer in use
 * 2) out of fashion, out of style, old-fashioned, passé
 * 1) out of fashion, out of style, old-fashioned, passé