Definition of invariable in English:



  • 1Never changing.

    ‘his routine was invariable’
    • ‘On the Central Coast, cooks season well-marbled beef with salt and garlic, sizzle it over local red-oak coals and serve it with the invariable trinity of garlic bread, stewed local pinquito beans and tomato salsa.’
    • ‘The results are invariable light, crisp and as tempting as food could possibly be, and the whole experience far less traumatic than I imagined.’
    • ‘Working on that invariable response, and the number of cricket fans in the country, there must have been three to four million spectators there that amazing day.’
    • ‘The invariable response, when you tell a child that the celebrities have been submerged in mud and entombed with rats, is ‘Why?’’
    • ‘These weren't just statistics, I was led to believe, but invariable truths.’
    • ‘Then he would come home, and Saturday lunch would be some kind of special event, which included, as its invariable dessert, suet pudding with golden syrup and custard.’
    • ‘The invariable result is a loss of quality and the increasing difficulty of including foreign authors in the publishers' programmes.’
    • ‘Side effects (from both free drug and free marine antibody protein) will be the invariable result.’
    • ‘If we expect that human character is an elusive and variable thing, then we cannot expect to catch it in a stiff and invariable style.’
    • ‘It's staying focussed for long periods of time and the invariable effects on posture, concentration and sense of wellbeing.’
    • ‘They have denied the distinction between higher and lower, to the invariable advantage of the latter.’
    • ‘With the almost invariable practice of boiling vegetables with its consequent loss of vitamins, the practice of providing fresh fruit with the meal would have much to recommend it.’
    • ‘Clade strengths were evaluated by analyzing 250 bootstrap replicates with the PROML program based on a model comprising one invariable plus four categories.’
    • ‘The second was the invariable denial that followed - the outright refutation of indisputable evidence, or the protestations of innocence or ignorance, or the imputation that supplements had been spiked or contaminated.’
    • ‘It isn't just an occasional failure, it's an invariable failure.’
    • ‘These details are not mentioned by the Gospels, but are an invariable feature of every icon of the Nativity.’
    • ‘This development was important because the rule was meant to be invariable, such that it constituted absolutely reliable support for the proving of the thesis proposition.’
    • ‘How did their fossil remains get sorted into an invariable order in the earth's strata?’
    • ‘The invariable result is always supposed to be mass unemployment, industry collapse, and economic meltdown - until someone points out reality.’
    • ‘One of the hard, invariable, and maddening unofficial rules of parenting, is that you pay for what you get.’
    unvarying, unchanging, changeless, unvaried, invariant
    constant, stable, set, steady, fast, static, uniform, predictable, regular, consistent, undeviating, unfluctuating, unwavering
    unchangeable, unalterable, immutable, fixed
    View synonyms
    1. 1.1Grammar (of a noun in an inflected language) having the same form in both the singular and the plural, as does relais in French.
      • ‘It consists, just as Esperanto, of completely invariable blocks that combine without restriction.’
    2. 1.2Mathematics (of a quantity) constant.
      • ‘The null hypothesis tested in this study, then, was the proportion of invariable sites model plus either site-specific or gamma-distributed rate variation.’
      • ‘Thus, the flux of water vapour at a constant concentration gradient across pores of invariable geometry will depend only on the molecular characteristics of the gas (solvent).’
      • ‘The fundamental constants are an extensive set of invariable quantities, such as the charge of the electron, which scientists use to predict a very wide range of phenomena.’


Late Middle English: from French, or from late Latin invariabilis, from in- not + variabilis (see variable).