Definition of infant in English:



  • 1A very young child or baby.

    • ‘But, we haven't found a way to take care of our elderly, our poor, young children and infants.’
    • ‘Extended families help in caring for infants and young children.’
    • ‘Viral infection is the cause of fever in most infants and young children.’
    • ‘This is a very practical course that explores the value of play in the lives of infants, toddlers and young children.’
    • ‘The Rules of the Road clearly states that infants or young children should never be left unattended in a car.’
    • ‘For children, the ranges are similar, except infants and young children should get slightly more fat.’
    • ‘In infants and young children, the tube is wider, straighter and shorter than in adults.’
    • ‘Our member companies are committed to the health and wellbeing of infants and young children.’
    • ‘The disease is much more serious in children, especially infants younger than 6 months of age.’
    • ‘Young children, infants and fetuses are particularly vulnerable to lead poisoning.’
    • ‘Shaken baby syndrome occurs most frequently in infants younger than six months old, yet can occur up to the age of three.’
    • ‘Several delivery devices are available for infants and young children.’
    • ‘In infants and very young children, pertussis can be deadly, so call your child's doctor right away.’
    • ‘Children consistently rated girls better caregivers for infants, young kids and the elderly.’
    • ‘Most patients who failed to endure were younger children or infants.’
    • ‘When we made the decision to adopt, we decided to seek a child from China because we were assured we could adopt a young and healthy infant there.’
    • ‘Very young children and newborn infants require a lower dose than older children.’
    • ‘There is no consensus, however, on when and how to treat infants and young children with symptoms of asthma.’
    • ‘The brains of infants and very young children are capable of storing fragmented memories, however.’
    • ‘Keep infants and young children away from newly mown grass.’
    baby, newborn, young child, little child, little one
    bairn, wean
    tot, tiny tot, tiny, sprog
    babe, babe in arms
    View synonyms
    1. 1.1[as modifier]Denoting something in an early stage of its development.
      ‘the infant science of bioelectrical medicine’
      • ‘Clearly, Ohio is not in an infant stage as far as hockey goes.’
      • ‘Running a party now, without electoral commission funding or time to establish a brand would simply kill any infant party before it had any time to grow.’
      • ‘Although the Texans' roster is only in its infant stages of development, the staff has had plenty to do besides scouting.’
      • ‘They caution that brain fingerprinting is in its infant stage and may never result in a reliable polygraph.’
      • ‘As raw as the theatrical chops may have been at this infant stage, the underlying talent is unquestionably in place.’
      • ‘It's a program still in its infant stage, and change is inevitable.’
      • ‘One thing the Malians have in mind is help in developing their infant tourist industry.’
      • ‘OOL is an infant science, and it seems to me that progress is being made.’
      • ‘The first step to bring the web beyond its infant stage is to understand where we are at and what tools we have at our disposal.’
      • ‘Governments provided public goods and promoted infant industries.’
      • ‘If we do all this, we have truly begun to develop the infant medium.’
      • ‘Again, we utilized a portion of the 800 system back then - it was in its infant stages in implementation.’
      • ‘How do you judge an infant company endeavoring to develop its business abroad?’
      • ‘From the early infant stage, children with autism are likely to be developmentally delayed.’
      • ‘Jeeps and lorries trundled down asphalt roads and the safari package tour was in its infant stages.’
      • ‘I think we are at the very infant stages of this debate, even though 18 months is perhaps not a very long time in the media.’
      developing, emergent, emerging, dawning, embryonic, nascent, new, fledgling, budding, burgeoning, growing, up-and-coming
      View synonyms
    2. 1.2Law A person who has not attained legal majority.
      • ‘I would ask the Court to note that the plaintiff is an infant.’
      • ‘If the third party is an infant or is mentally disordered, this lack of rational capacity may be regarded as sufficient to discount the third party's act in causal terms.’
      • ‘It may look different if the person being detained is an infant utterly incapable of fleeing the jurisdiction or giving trouble.’
      • ‘The child was therefore an infant when his mother married, and only knew his step-father for a period of 7 months.’
      • ‘In the result the benefit of the lease was assigned by decree to the infant and the trustee, subject to indemnity, made to account for profits.’


Late Middle English: from Old French enfant, from Latin infant- unable to speak from in- not + fant- speaking (from the verb fari).