immature

/ˌɪmətjˈʊɹ/ · 3 syllables

Meaning

adjective

1. characteristic of a lack of maturity
   “immature behavior”
2. (used of living things especially persons) in an early period of life or development or growth
   “young people”
3. not fully developed or mature; not ripe
   “unripe fruit”
4. not yet mature
5. (of birds) not yet having developed feathers
   “a small unfledged sparrow on the window sill”

Synonyms for immature

• adolescent
• babyish
• childish
• young
• one-year-old
• two-year-old
• three-year-old
• four-year-old
• five-year-old
• infantile
• boyish
• childlike
• early
• girlish
• junior
• little
• newborn
• green
• unripe
• unripened
• unaged
• embryonic
• inchoative
• larval
• prepubescent
• prepupal
• pubescent
• pupal
• underdeveloped
• unfledged
• unfeathered

Antonyms of immature

• mature

Words that rhyme with immature

• mature
• obscure
• secure
• sure
• endure
• pure
• assure
• cure
• moor
• contour
• insure
• lure
• tour
• impure
• miniature
• premature
• reinsure
• allure
• detour
• ensure
• manure
• procure
• reassure
• unsure
• boor
• brochure
• couture
• demure
• epicure
• inure