Definition of alas in US English:

alas

exclamation

archaic, humorous
  • An expression of grief, pity, or concern.

    ‘alas, my funds have some limitations’
    • ‘Shopping, alas, is likely always to lag behind the entertainment industry.’
    • ‘Oh my god, I nearly pushed her out of the way to get at him, but alas, he only had eyes for her.’
    • ‘I caught my arms around a low wall that separated the two sections of the path, but alas!’
    • ‘She became the most passionate wife that a man could hope that she might be, but alas.’
    • ‘We looked in vain expecting the area to miraculously improve but alas, no such luck.’
    unluckily, sadly, regrettably, unhappily, woefully, lamentably, alas, sad to say, sad to relate
    View synonyms

Origin

Middle English: from Old French a las, a lasse, from a ‘ah’ + las(se) (from Latin lassus ‘weary’).

Pronunciation

alas

/əˈlæs//əˈlas/