unripe

adjective

1. not ripe; immature; not fully developed: unripe fruit.
2. too early; premature.

adjective

1. not fully matured
2. not fully prepared or developed; not ready
3. obsolete premature or untimely

adj.Old English unripe “premature” (in reference to death), from un- (1) “not” + ripe. Meaning “immature, not fully developed (of fruit, etc.) is recorded from mid-13c. Cf. Middle Dutch onrijp, Old High German unrifi, German unreif.