Definition of gloater in English:

gloater

noun

  • See gloat

    • ‘He is no gloater, but his team's 1-0 victory over his old employers clearly provided a day to savour.’
    • ‘Late last night, I took the time to read the 39-page report - something which, it is clear to me, most of the callous gloaters on the other side of this debate have not bothered to do.’
    • ‘But contrary to what the left-wing gloaters who have not bothered to follow the story until last night are writing, I have never made such claims.’