Immature a. : Not mature; unripe; not arrived at perfection of full development; crude; unfinished; as, immature fruit; immature character; immature plans.

Immature a. : Premature; untimely; too early; as, an immature death.

Example:
What do people accomplish with Immature arguments?

Taxonomy
IMx, Billboard, 02-05, the Billboard, Billboard 200, Introducing IMx, We Got It, R&B/Hip, Behavior, Top R&B, Hip-Hop Albums, Santos, United States, Kelton, LDB, Journey, Jones, Playtyme Is Over.

Defination from the web:
Immature, was an American R&B group, managed by record producer Chris Stokes. ... The group released four albums under the name Immature: On Our Worst Behavior (1992) (which included former member Don "Half Pint" Santos, later ...