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an event that occurs at a critical time;
"at such junctures he always had an impulse to leave"
"it was needed only on special occasions"
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a vaguely specified social event;
"the party was quite an affair"
"an occasion arranged to honor the president"
"a seemingly endless round of social functions"
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reason;
"there was no occasion for complaint"
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the time of a particular event;
"on the occasion of his 60th birthday"
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an opportunity to do something;
"there was never an occasion for her to demonstrate her skill"