Definition of inactive in English:


See synonyms for inactive

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  • 1Not engaging in or involving any or much physical activity.

    ‘an inactive lifestyle’
    • ‘In fact, individuals who introduced moderate activity to their formerly inactive lifestyles noticed the most pronounced benefits.’
    • ‘This may have confined him to a wheelchair for all of his 31 years, but it hasn't restricted him to an inactive lifestyle.’
    • ‘The Edinburgh teenager is one of a growing number of children whose inactive lifestyles are leading to spinal injuries.’
    • ‘Being physically inactive (less than 30 minutes of activity a day) greatly increases your chances of getting chronic diseases.’
    • ‘Given our current inactive lifestyle, it's necessary to give your health a serious thought.’
    • ‘In fact, if their work-outs encourage other young people to take more exercise at a time when there is concern about too many members of that generation being physically inactive, it could well do some good.’
    • ‘We also know that being physically inactive is a major risk factor in the development of coronary artery disease.’
    • ‘Finally, he says, people's inactive lifestyles have also contributed to the problem.’
    • ‘You should remain physically inactive for at least 1.5 hours after every time you have consumed some fresh raw fish or egg yolk.’
    • ‘Despite this, inactive lifestyles and overeating remain the norm for most Americans, as illustrated by the rising epidemic of obesity over the past three decades.’
    • ‘I'm just about coming to the end of this lazy, inactive period.’
    • ‘All of these changes may be more pronounced if you've led an inactive lifestyle.’
    • ‘Helping women make the shift from an inactive to an active lifestyle can have important health benefits.’
    • ‘The more active group was found to have a 23 percent lower chance of catching a cold than the physically inactive group, with risk reduction most pronounced in the autumn.’
    • ‘Here we are in an inactive country, and we don't play physical games as a matter of course, and so our exposure to physical hurt is minimal, and very shocking therefore when it comes.’
    • ‘Over 50% of all Canadians are physically inactive.’
    • ‘Although married men are more likely to be overweight or even obese, married adults are less likely to smoke, drink heavily or be physically inactive.’
    • ‘I've actually grown to appreciate my rest days because I don't view them as lazy, inactive days, but rather as free, unstructured ones.’
    • ‘This whole change of lifestyle is leading to a very inactive population.’
    • ‘‘We concentrate a lot on co-ordination and mobility because as we get older we loose our co-ordination if we become inactive,’ said Mrs Smith.’
    idle, indolent, lazy, lifeless, slothful, lethargic, inert, slow, sluggish, stagnant, dozy, unenergetic, listless, languishing, vegetating, torpid
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    1. 1.1Not working; inoperative.
      ‘the device remains inactive while the computer is started up’
      • ‘Books were sitting on bookshelves along the back wall, opposite them were inactive Apple computers sitting on old school desks.’
      • ‘The banks believe that accounts should not be treated as dormant until they have been inactive for more than ten years.’
      • ‘When you turn the computer over to a different user, your session becomes inactive and inaccessible, but your program and files remain open.’
      • ‘Students should expect the site to be slow, or even inactive, due to the high number of student inquiries.’
      • ‘Why does it take so long for my online bank's web site to open that by the time I've got to a transaction screen, it's decided that I've already been inactive for five minutes and logged me back out again?’
      • ‘There is also the integrally insoluble hazard of America's inactive nuclear power stations (no nuclear power station has ever been dismantled, anywhere).’
      • ‘There are blocking devices which you put near the back which render every phone inactive.’
      inoperative, non-functioning, idle, turned off, dormant
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    2. 1.2Not engaging in political or other activity.
      ‘an inactive Russian spy’
      • ‘The other two were born from the remains of political formations now inactive but which at one time had parliamentary representation.’
      • ‘Hadden has little experience of, or respect for, the club game, admitting while Edinburgh coach that he would rather his unused squad players remain inactive at the weekend rather than turn out for their clubs.’
      • ‘Because I'm a party member (albeit a mostly inactive one), I recently got sent a letter asking me to vote on a short-list of potential candidates.’
    3. 1.3Having no chemical or biological effect.
      ‘the inactive X chromosome’
      • ‘Gene insertions could also link chemical pathways to previously inactive toxins or transfer allergenic proteins.’
      • ‘A different mechanism for maintaining and inheriting a pattern of active and inactive genes relies on chemical or structural alterations in the chromosomes.’
      • ‘As before, treatment of nonirradiated mice with active or inactive T4N5 had no effect on the generation of an immune response.’
      • ‘There was no superiority to the usual effects of inactive placebos - which is the assumption made by active placebo advocates.’
      • ‘Both, N - 7-and N - 9-glucosides are considered extremely stable and biologically inactive in normal plants.’
      • ‘Aluminum in mildly acidic or neutral soils occurs primarily as insoluble deposits and is essentially biologically inactive.’
      • ‘The sit mutant of tomato accumulates the biologically inactive compound trans ABA alcohol instead of ABA in response to water stress.’
      • ‘Initial attempts to isolate erythropoietin from urine yielded unstable, biologically inactive preparations of the hormone.’
      • ‘When bound to SHBG, the hormone is considered biologically inactive.’
      • ‘It is a prodrug in which 5-aminosalicylic acid is linked via a diazo bond to 4-aminobenzoyl- alanine, an inert and biologically inactive carrier molecule.’
      • ‘Alteration of residues by site directed mutagenesis which are close to, or in contact, with the sugar result in variety of effects ranging from insoluble protein through inactive enzyme to little observable change.’
      • ‘The different brands of pill have a differing array of vitamins and extracts, but these are inactive ingredients, merely diluting the effect of the BZP.’
      • ‘This protective effect also keeps vitamin A from oxidizing to an inactive form, and when vitamin E is lacking, vitamin A deficiency also frequently occurs.’
      • ‘In low calcium, nifedipine will have an additive effect of shifting the DHPR to the inactive state, also seen as a decrease in force generation.’
      • ‘At Merck, scientists are collecting data about patterns of genes that become active or inactive when drugs cause serious effects.’
      • ‘Ether has very few chemical properties as it is relatively inactive.’
      • ‘The double-blind placebo trials use inactive agents to control for placebo effects.’
      • ‘In these applications the formation of dimeric species can effectively render the compound inactive.’
      • ‘Subjects carrying an inactive NQO1 allele exhibited only a slight, nonstatistically significant, decreased risk of asthma.’
      • ‘Creating double blind conditions in trials of counter irritants can be problematic; rubefacients irritate the skin whereas inactive placebos do not.’
    4. 1.4(of a disease) not exhibiting symptoms.
      ‘inactive Crohn's disease’
      • ‘My practice included tuberculous patients and this might have represented inactive disease.’
      • ‘A score of 150 or less indicates inactive disease, and a score higher than 450 indicates critical illness.’
      • ‘It is important to have a tuberculin skin test to make sure that you do not have an inactive tuberculosis infection, which could worsen while you are on infliximab therapy.’
      • ‘If there is no clinical or radiographic response by 2 months, treatment can be stopped and other diagnoses including inactive tuberculosis considered.’
      • ‘A small study compared five patients with active CD to five patients with inactive disease and found serum zinc levels significantly lower in those with active disease.’
      • ‘The predictors of HP we identified do not apply to chronic and inactive forms of the disease.’
      • ‘Another 14 BAL samples were obtained from patients in the inactive phase of the disease, either spontaneously or after therapy.’
      • ‘Three patients with inactive disease had decreased butyrate oxidation and interestingly, all three relapsed within a few weeks.’
      • ‘In patients with inactive disease, levels fell to those of controls.’
      • ‘HPV may be inactive or silent in most people, causing no symptoms, but it can still be transmitted sexually to others and eventually cause great harm.’
      • ‘Prior to this the cancer was inactive or just sitting there without exchanging energy with the rest of the body.’
      • ‘If the chest radiograph is compatible with inactive TB, no sputum specimens are required, and the applicant enters the country with class B2 status.’
      • ‘About 10 to 15 per cent of those with inactive tuberculosis will go on to develop active cases at some point in their lives.’
      • ‘We designed a pilot trial to investigate the tolerability and amount of fat excretion alter the oral administration of a chitosan and ascorbic mixture for inactive Crohn's disease.’
      • ‘Patients in inactive carrier stage do not need treatment, since their liver disease progresses very slowly, if at all.’
      • ‘This seems particularly likely in the patient who had an old, inactive hip joint tuberculosis and a false-positive PCR test result from the knee joint sample in this study.’
      • ‘It is likely that the cirrhosis must become inactive with little or no addition of new extinction lesions, so that at the time of examination all the lesions are delicate and highly regressed.’
      • ‘Patients with inactive, late emphysematous, or fibrotic sequelae of HP were classified in the control group.’
      • ‘Age and sex matched relapse and quiescent patients were selected for further study from the 146 inactive TB patients.’
      • ‘In contrast, histologically visible fibrosis is absent in the majority of sinusoids in our livers with inactive alcoholic cirrhosis.’



/inˈaktiv/ /ɪnˈæktɪv/


Mid 17th century from in- + active.