Don't act so high and mighty just because you won the game.
high and mighty
idiomOverbearingly arrogant; ostentatiously self-important or self-aggrandizing.
He acts high and mighty at work, but he is actually quite insecure about his own performance.
Despite his humble beginnings, he adopted a high and mighty attitude that alienated his former friends and colleagues.
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come hell or high water
Regardless of the hardships; no matter what difficulties may arise.
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friends in high places
Friends who have authority or influence and who can ensure that one's interests will be protected or furthered.
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get high
To intoxicate oneself with drugs or other substances.
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get off one's high horse
To stop acting in an imperious, overbearing or bossy manner.
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hell or high water
Highly adverse circumstances; acts of God.
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high and dry
Abandoned, stranded, helpless.
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high and low
Everywhere; all over the place.
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high cotton
The best of times; a time of well being.