Definition of raiment in US English:

raiment

noun

archaic, literary
  • Clothing.

    ‘ladies clothed in raiment bedecked with jewels’
    • ‘Their long slender bodies were clothed in raiment so silky, and their staffs issued high command.’
    • ‘A lone figure stood on the deck, dressed in raiment of yellow and lime, bearing short white hair that stood upright, and wielding a wood staff with a white rabbit carved atop it.’
    • ‘It's an especially lovely option at this time of year, with the trees donning their autumnal raiment.’
    • ‘Poseidon clothes himself in raiment of gold, grasps his gold whip, and takes his stand upon his chariot.’
    • ‘Acolytes in white and brown raiment came forth, standing just before her.’
    outfit, clothes, costume, ensemble, suit, clothing, dress, attire, garments, garb, turnout, rig, uniform, livery, array, regalia, robes, finery
    View synonyms

Origin

Late Middle English: shortening of obsolete arrayment ‘dress, outfit’.

Pronunciation

raiment

/ˈrāmənt//ˈreɪmənt/