1 adult behaviour
ADJ. great, growing, increasing I can see an increasing maturity in how she understands the world. | emotional, intellectual
VERB + MATURITY have | show She has shown great maturity in her behaviour this term. | grow in These latest paintings show how the artist has really grown in maturity. | lack
2 full growth
ADJ. full It can take years for these plants to reach full maturity. | physical, psychological, sexual
VERB + MATURITY approach, come to, grow to, reach The insects lay eggs when they approach maturity.