Definition of do (or try) one's damnedest in English:

do (or try) one's damnedest

phrase

informal
  • Do or try one's utmost.

    ‘I tried my damnedest to lift the ball’
    • ‘I'm going to spend the next few months trying my damnedest to tiptoe through the mine fields of other people's political passions.’
    • ‘He was a class act, and I was trying my damnedest to be one, too.’
    • ‘Here is her current husband, a dour-faced man with a droning voice, who is trying his damnedest to look like an optimist, and his own wife will not deign to gaze at him and smile.’
    • ‘Everyone should get involved in electoral politics and try their damnedest to nominate the best possible candidate and they should give money and time to make that happen.’
    • ‘I will try my damnedest to make that one post worth something.’
    • ‘I will try my damnedest to capture the look on Alex's face when she lays eyes on one of these.’
    • ‘We tried our damnedest to make it special entertainment, but I'll admit I'm a contributor to the decline in TV standards.’
    • ‘And I tried my damnedest to spoil my bride for a week.’
    • ‘I know they will be doing their damnedest to win the game, but it's not going to be easy.’
    • ‘Our men and women in uniform will be doing their damnedest to accomplish some very dangerous missions, and they know the risks.’
    try, attempt, venture, undertake, aspire, aim, seek, set out