Bigger meaning : Of great size, large. (of an industry or other field, often capitalized) Thought to have undue influence. Popular. Adult. Fat. Important or significant. (with on) Enthusiastic (about). Mature, conscientious, principled; generous. Well-endowed, possessing large breasts in the case of a woman or a large penis in the case of a man. (sometimes figurative) Large with young; pregnant; swelling; ready to give birth or produce. Used as an intensifier, especially of negative-valence nouns (of a city) populous (of somebody's age) old, mature. Used to imply that somebody is too old for something, or acting immaturely. To make or become bigger.