{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
Slang English vocab. Английский сленговый словарь. 2012