immaturely

This adverb carries a strong negative connotation when describing human behavior, suggesting a failure to act according to the expectations of one's age or social position. It often implies a lack of self-control or an inability to handle stress with dignity, distinguishing it from simply being "young."

In biological or agricultural contexts, the term is neutral and descriptive. It refers strictly to the timing of a process, such as harvesting or birth, occurring before the natural point of full development.