Definition of immature in English:



  • 1Not fully developed.

    ‘many of the fish caught are immature’
    • ‘For example, experiments conducted with tomato indicate that immature fruits do not ripen in response to exogenous ethylene.’
    • ‘Sexually immature and drab colored juveniles represent the first phase.’
    • ‘The ovule is an immature seed, which does not yet contain a viable embryo.’
    • ‘The mottled brown raptors I saw on the sixth are indeed immature Brahminy Kites.’
    • ‘In that eggplant does not experience a marked ripening stage like tomato and pepper, immature and mature fruit were compared.’
    • ‘The olives, having done pretty well last year, have shed all their immature fruit.’
    • ‘My only explanation if there wasn't a mix-up is that immature birds have much shorter beaks than their parents.’
    • ‘They hunt for food at night, live alone and are sometimes found in small groups of adults with immature offspring.’
    • ‘I discovered three of them eating the immature fruits in the tree's spreading crown.’
    • ‘Some of the solo voices are a bit immature but the choral singing does immense credit to the conductor and his young team.’
    • ‘Drugs that are effective against the immature and early immature stages should be used at this time of the year.’
    • ‘The fruit looks like immature plums, and each variety has its own harvesting schedule.’
    • ‘Among immature males, those obtained from the wild also clustered together.’
    • ‘Seeds were harvested at 40 days after flowering and immature seeds were removed.’
    • ‘Our results suggest that immature birds try to increase fat stores by increasing time available for foraging at stopover sites.’
    • ‘Because this is kind of what an immature Bald Eagle would look like if you're looking at one.’
    • ‘Safety considerations are more important in children because children are physically and emotionally immature.’
    • ‘I ate my first immature pea pod of the year, straight off the plant.’
    • ‘They are either feasting on escapes of immature farmed fish or on the uneaten feed pellets that accumulate in the water below the cages.’
    • ‘The reticulocyte count measures the number of immature red blood cells being produced.’
    unripe, not ripe, not mature, not matured, unmellowed
    View synonyms
    1. 1.1Having or showing an emotional or intellectual development appropriate to someone younger.
      ‘his immature sense of humour’
      • ‘I think this woman sounds extremely naive, immature and unintelligent on the matter.’
      • ‘I think that maybe you might be more mature than the boys you know and you just don't like immature guys.’
      • ‘Then again I did ask for it I called someone an emotionally immature moron.’
      • ‘But, my evaluation of her was that she was rather immature and seeking attention.’
      • ‘He is annoying and a bit immature for his age, but that's okay.’
      • ‘To do otherwise would be as childish and immature as my behaviour in the first place.’
      • ‘No matter how mature or immature I was at any given point, it would not have shaken that belief.’
      • ‘If you think finance dictates social dynamics then you are immature and naive.’
      • ‘Pardon me for saying this, but people who talk like that strike me as horribly immature.’
      • ‘Going out with someone is a big deal and I find that a bit immature.’
      • ‘She had her immature, childish moments, but there were times when she acted twice her age.’
      • ‘Some lecturers say the students are immature, unsophisticated and do not know what they want in class.’
      • ‘All the guys were immature or just plain weird.’
      • ‘We had been reassured by professionals he was just immature, so we expected him to gain employment and become independent.’
      • ‘The boys you know seem particularly immature for treating you like you're inferior.’
      • ‘When I read back over this opinion I realise how immature I was then.’
      • ‘He's still a bit immature, but also just 20 years old.’
      • ‘Thirdly, there is no need to engage in childish name calling or immature ranting.’
      • ‘I could hear people calling me immature but I never cared.’
      • ‘Callie knew she was acting a little immature, but she didn't care.’
      childish, babyish, infantile, juvenile, puerile, jejune, callow, green, inexperienced, unsophisticated, unworldly, naive, ingenuous
      View synonyms


Mid 16th century (in the sense ‘premature’, referring to death): from Latin immaturus untimely, unripe, from in- not + maturus ripe (see mature).