v. phr. , informal To pursue pleasure; enjoy games or night life very much; have fun at places of entertainment. Joe had had a hard winter in lonesome places; now he was in town living it up. The western cowboys usually went to town on Saturdays to live it up.
LIVE IT UP
Meaning of LIVE IT UP in English
American idioms English vocabulary. Английский словарь американских идиом. 2012