fly high

Verb
  1. Be elated (synset 201833567)
    "He was flying high during the summer months"
    is a type of: experience, feel - undergo an emotional sensation or be in a particular state of mind
  2. Make steady progress;
    Be at the high point in one's career or reach a high point in historical significance or importance (synset 202347796)
    "The new student is thriving"
    is a type of: change state, turn - undergo a transformation or a change of position or action
    same as: flourish, prosper, thrive

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