Premature is an adjective that describes something happening or occurring before the expected or appropriate time. UNRIPE, with 6 letters, is an EARLY stage of development, often used to describe fruit or vegetables. PRECOCIOUS, with 10 letters, is an adjective used to describe a person who is unusually advanced in mental or emotional development for their age. SOONER, with 6 letters, is an adverb meaning before the expected or usual time. INOPPORTUNE, with 11 letters, is an adjective meaning not suitable or convenient for a particular purpose. EMBRYONIC, with 9 letters, is an adjective used to describe something in its earliest stages of development. ABORTIVE, with 8 letters, is an adjective meaning unsuccessful or incomplete. IMMATURE, with 8 letters, is an adjective meaning not fully developed or mature. PREVIOUS, with 8 letters, is an adjective meaning coming before something else in time or order. EARLY, with 5 letters, is an adjective meaning happening or done before the usual or expected time. UNTIMELY, with 8 letters, is an adjective meaning not happening at the right or expected time.