C13: from Old French atirier to put in order, from tire row; see tier1
attirement in American English
(əˈtaiᵊrmənt)
noun
obsolete
dress; attire
Word origin
[1560–70; attire + -ment]This word is first recorded in the period 1560–70. Other words that entered Englishat around the same time include: acute, bulb, clinch, radial, vertex-ment is a suffix of nouns, often concrete, denoting an action or resulting state (abridgment; refreshment), a product (fragment), or means (ornament)