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|Verb||1.||buoy up - become more cheerful; "after a glass of wine, he lightened up a bit"|
|2.||buoy up - make more cheerful; "the conversation lightened me up a bit"|
cheer - show approval or good wishes by shouting; "everybody cheered the birthday boy"
|3.||buoy up - keep afloat; "The life vest buoyed him up"|