let oneself go

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let oneself go (third-person singular simple present lets oneself go, present participle letting oneself go, simple past and past participle let oneself go)

1. (idiomatic) To relax and enjoy oneself without restraint.

   Natara lets herself go with a cup of coffee after she helps close the café.

2. (idiomatic) To cease to care about one's appearance, allowing oneself to become unkempt, overweight, etc.

   Cherrie fell down the tree of ugly and hit branches galore upon letting herself go.

• glow-down