Definition of banzai in English:

banzai

exclamation

  • 1A Japanese battle cry.

    ‘the courtyard echoed to shouts of ‘Bombs away!’ and ‘Banzai!’’
  • 2A form of greeting used to the Japanese emperor.

    • ‘Some 500 supporters greeted Lee on his arrival by waving Taiwan's national flag and the ‘Hinomaru,’ or Japanese flag, while carrying welcome banners and chanting ‘Banzai, banzai!’’
    • ‘From the simplest (a hearty cry of skäl in Sweden or banzai in Japan) to the winding, poetic, hour-long toasts that briefly came into vogue in Ireland, it has been a long time since the hunting gods took any pleasure in the practice.’

adjective

  • 1(especially of troops) attacking fiercely and recklessly.

    ‘a banzai charge’
    • ‘Then, before dawn on 29 May, they launched one of the biggest banzai charges of the war which overran two command posts and a medical station before being halted.’
    • ‘A few miles up the track lies Mt Austen, where the Japanese defended their most important command post with suicidal banzai counter-attacks.’
    • ‘They resorted to one last desperate banzai mission that was put down without much of a struggle.’
    • ‘Company A beat off several banzai attacks but was bypassed and in danger of being cut off and surrounded.’
    • ‘The emperor overrode his military, who wanted a banzai suicide last battle, and broadcast their unconditional surrender.’
    1. 1.1informal Behaving wildly; berserk.
      ‘the computers went banzai’
      • ‘The proof of this already lies with the Evolution VII, which is heavier, more fuel efficient, more refined and reportedly less banzai than its predecessor.’
      • ‘On first sight it doesn't appear to be a technical circuit, it's all banzai, maximum attack and aggression over the kerbs.’

Origin

Japanese, literally ‘ten thousand years (of life to you)’.

Pronunciation

banzai

/banˈzʌɪ/