The story
- Middle English · inherited fromatir
- Old French · derived fromatirier“to equip”
- Middle English · inherited fromatyren
- English todayattire
The verb is from Middle English atyren, atiren, from Old French atirier (“to equip”), from a- + tire (“rank”), akin to German Zier (“ornament”) and Old Norse tírr (“glory, renown”). The noun is from Middle English atir, from the verb.
Etymology from Wiktionary, CC BY-SA 4.0.