廃すたり

noun

going out of use; becoming obsolete; falling into disuse

Refers to something becoming outdated, unfashionable, or no longer practiced. Often used in the phrase 廃りになる.

• この習しゅう慣かんはもう廃すたりになった。

  This custom has already fallen into disuse.

• 技ぎ術じゅつの進しん歩ぽで古ふるい機き械かいは廃すたりになる。

  Old machines become obsolete with technological progress.