Shape up

verb, slang

Definitions

Verb
  1. 1
    To improve; to correct one's bad habits or behavior. idiomatic, intransitive

    "He'd better shape up soon, or he'll fail the class."

  2. 2
    develop in a positive way wordnet
  3. 3
    To take shape; to transform into or become. idiomatic, intransitive

    "The fog has vanished and it's shaping up to be a beautiful day."

  4. 4
    To gesture or posture threateningly; to approach as if to fight; to pose to intimidate. intransitive, slang

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