immature

Definition

Occurring before the proper time; untimely, premature (especially of death).

Etymology

From Middle French immature. Partially displaced unripe, from Old English unrīpe (“unripe, immature”).

Example Sentences

• "And thou also canst best account for the causes of her immature death […]."
• "You're only young once, but you can be immature the rest of your life."
• "The man was immature for throwing a tantrum."