Immature Tricolored Heron Sightings Are Baffling Local Birders

The meaning of IMMATURE is exhibiting less than an expected degree of maturity. How to use immature in a sentence. IMMATURE definition: 1. not behaving in a way that is as calm and wise as people expect from someone of your age: 2.. Learn more. IMMATURE definition: not mature, ripe, developed, perfected, etc. See examples of immature used in a sentence. If you describe someone as immature, you are being critical of them because they do not behave in a sensible or responsible way. Use the adjective immature to describe something that is not fully grown: “Elizabeth rescued an immature sparrow that had fallen from its nest during the storm.”

1. Not fully grown or developed: an immature plant. 2. Marked by or suggesting a lack of normal maturity: silly, immature behavior. See Synonyms at young. Jan 27, 2026 · Adjective immature (comparative more immature, superlative most immature) (now rare) Occurring before the proper time; untimely, premature (especially of death). [from 16th c.] Immature definition: Not mature or ripe; not completely grown or developed. immature, adj. & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary