Definition of let oneself go in US English:

let oneself go

phrase

  • 1Act in an unrestrained or uninhibited way.

    ‘you need to unwind and let yourself go’
    • ‘Decadence is selfish - it means letting yourself go and not caring about others, not caring about tomorrow so you do whatever you want today.’
    • ‘Some men can't handle a woman who really lets herself go.’
    • ‘The government seems uncomfortable about these ‘drink-fuelled scenes’, fearful of rowdy crowds of people letting themselves go.’
    • ‘The size of the audience at the event was ideal, as there was generally sufficient space on the dance floor to let yourself go, and plenty of places to sit if you needed to take a break.’
    • ‘Almost a quarter of men in London admitted completely letting themselves go and sobbing or bawling in the past month.’
    • ‘Carl made her feel so good, so relaxed that she let herself go completely, losing herself in the moment.’
    • ‘I wish that everyone would let themselves go once in a while.’
    • ‘It is so good to be able to go out at night and let myself go.’
    • ‘‘I think I am just not afraid of letting myself go in front of the children; whatever it takes, I will do it to make them learn,’ said Gemma.’
    • ‘By the end of the show there's not a person in the audience who hasn't just thought, ‘What the hell,’ and let themselves go.’
  • 2Become careless or untidy in one's habits or appearance.

    ‘he's really let himself go since my mother died’
    • ‘He has let himself go, no longer caring about his appearance, or able to get up in the mornings.’
    • ‘They find a guy and make an effort when they go on a date, and then once they get comfy with him and have kids they let themselves go.’
    • ‘But when he told me I was letting myself go because I wore a size 8, it stung so much I thought I might collapse with the weight of it.’
    • ‘Let's speak plainly here, David, it looks as if you've been letting yourself go.’
    • ‘Just because you get married and have children it does not mean you have to let yourself go.’
    • ‘After the disappointment of the Olympic trial I really let myself go, and my health went downhill very quickly.’’
    • ‘No wonder most of us meet a guy our own age, settle down and let ourselves go.’
    • ‘His condition before the fight in New York did not indicate a man building up muscular mass so much as a boxer letting himself go.’
    • ‘You have to wait until you get married before you start letting yourself go.’
    • ‘Even though a well-chosen wardrobe can help make the most of your shape, you will never look your best if you have totally let yourself go.’