The phrase "live up" can be defined as meeting or exceeding expectations or fulfilling one's potential. Some synonyms for this phrase include "rise to the occasion," "prove oneself," "deliver on promises," "meet or exceed expectations," and "excel." Other synonyms for "live up" include "satisfy demands," "fulfill an obligation," "keep one's word," and "meet the challenge." Using these synonyms in place of "live up" can add variety and nuance to your language, helping you communicate your ideas more effectively and with greater precision.