Definition of forbidden in English:



  • 1Not allowed; banned.

    ‘a list of forbidden books’
    • ‘Grateful for our help, the king was more than willing to allow us access to the forbidden locales, giving us a royal pass in order to avoid suspicion.’
    • ‘Nevertheless, there has been no action of forbidden sacrifice as yet.’
    • ‘In the book you'll also find magic and monsters, angels and demons, magical swords and forbidden books.’
    • ‘Indeed, this entire area with the Egyptian and Hindu place names in the Grand Canyon is a forbidden zone - no one is allowed into this large area.’
    • ‘Japan was a forbidden country for foreigners and no Japanese was allowed to leave Japan.’
    • ‘This leads to the optically forbidden state becoming partially allowed.’
    • ‘Everyone seemed to understand that there were such things as taboos, criminal facilities and forbidden editing - especially in cinema.’
    • ‘The total anonymity of the Internet allows for the surfacing of forbidden or forgotten zones of the psyche.’
    • ‘Whether it was the forbidden joy of being allowed to paint on a wall, or the exhilaration of letting their inhibitions go, their faces glowed with excitement.’
    • ‘Now I have to buy the books to find out the forbidden secrets that have been hidden from mankind for thousands of years!’
    • ‘It's the sound of forbidden affairs, illicit sex with strangers in bars, drunken confessions, of real life.’
    • ‘At nighttimes he would descend into the village and read from the forbidden bible, for his people had already developed books.’
    • ‘But he discovered that the paint allowed him to hide the forbidden thoughts in his mind that his facial expressions would otherwise betray.’
    • ‘Worse, the board kept building on the forbidden land, even after it knew the construction was illegal.’
    • ‘Even understanding the roots of certain forbidden actions does not guarantee that they will be avoided.’
    • ‘The authorities, in the meantime, would determine whether any of the seized books or their authors were on any lists of forbidden publications.’
    • ‘The creation was completely illegal - a development in a forbidden area which by rights should be demolished.’
    • ‘The guys nick some four-eyed geek's suitcase full of forbidden books - and this is where the title's Balzac reference comes in.’
    • ‘The community is forced to shut down the library, because all the books contain the forbidden letter.’
    • ‘Fear over the discovery and stealing of the forbidden books is muted.’
    prohibited, banned, debarred, vetoed, proscribed, ruled out, not allowed, disallowed, taboo, impermissible, not acceptable, unauthorized, unsanctioned
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  • 2Physics
    Denoting or involving a transition between two quantum-mechanical states that does not conform to some selection rule, especially for electric dipole radiation.

    • ‘Surprises emerged when the researchers looked at the crystal's effect on ultrasound frequencies above the forbidden range.’
    • ‘Light within a forbidden range of wavelengths can't propagate through the array, so if a row of cylinders is omitted, the light will be trapped in the missing row.’


  • the forbidden degrees

    • The number of steps of descent from the same ancestor that bar two related people from marrying.

      • ‘This has always seemed unlikely since without a dispensation marriage within the forbidden degrees was always open to challenge.’
      • ‘That is, family lines should be known well enough to prevent marriages within the forbidden degrees and to determine blood and family obligations.’
      • ‘In the act of 1580, forbidden degrees of kinship were extensively prescribed.’
      • ‘The only thing necessary for a legal marriage was the free consent of both parties, as long as they were of age, were not within the forbidden degrees of kinship, and were free of any other marriage.’
      • ‘Incest was considered a major crime, and forbidden degrees of kinship were extensively prescribed in the act of 1580.’
      • ‘In some of the myths it is permissible for them to marry women of various forbidden degrees.’
      • ‘Nevertheless dispensations to marry within forbidden degrees are more readily granted to the rich and powerful than to others.’
      • ‘Marriage within seven degrees was not allowed until the Fourth Lateran Council reduced the forbidden degrees to four.’
      • ‘These restrictions are officially know as forbidden degrees of relationship.’
      • ‘He had made an illicit marriage within these forbidden degrees.’
  • forbidden fruit

    • A thing that is desired all the more because it is not allowed.

      • ‘Bars and clubs, serving cheap, promotional drinks and luring innocent young victims into their establishments to taste the forbidden fruit of alcohol, in a greedy quest for economic rewards.’
      • ‘These combine numerology and astrology - knowledge, as he put it, that had remained ‘a forbidden fruit since the dawn of civilisation’.’
      • ‘They had an added cachet of being forbidden fruit: the Stalinists did not approve.’
      • ‘Once something is banned, an even bigger market is created; like most people, the Chinese are attracted to forbidden fruit.’
      • ‘The dynamic of incest, while not quite the shocker it may have been twenty years ago, does point to the all-too-human attraction to forbidden fruit, and the guilty addiction to such situations.’
      • ‘However, as we all know, marriage and kids simply make affairs between a married lady and the best man all the more charming because the forbidden fruit is by far the tastiest.’
      • ‘Lately, my fascination with the notion of forbidden fruit does not concern rebellious acts, but rather romantic prospects.’
      • ‘Noah is an openly gay male who seems to have it all until he finds himself desiring the forbidden fruit - women.’
      • ‘But as the long nights wore on, and my milk supply began to dwindle as Alice's appetite increased, a friend suggested we introduce the forbidden fruit that is formula milk into her diet.’
      • ‘Nostalgia is not a forbidden fruit but astute statesmen never allow prudence to succumb to it.’