What does banzai mean?
Banzai is a Japanese exclamation literally meaning 'ten thousand years', originally a wish for long life addressed to the emperor and later adopted as a fervent battle cry by Japanese soldiers. In English it functions chiefly as an interjection expressing wild enthusiasm, triumph, or wholehearted celebration — the equivalent of shouting 'Hurrah!' with unusual intensity. The word also survives as a noun or modifier describing a reckless, all-out charge or desperate effort, a sense popularized by accounts of Second World War 'banzai charges', mass assaults launched with suicidal disregard for survival. Because of these military associations, banzai can carry charged connotations, ranging from festive cheer at cultural events to images of headlong, do-or-die courage. Borrowed directly from Japanese into English in the late nineteenth century, it remains most natural in informal, emphatic contexts where ordinary expressions of excitement would seem too tame.
Used to express enthusiastic celebration, loyal support, or triumphant joy, originally as a salute wishing ten thousand years of life.
"'Banzai!' the fans chanted as the home team took the field."
Strongly associated with Japanese cultural and historical context; use outside that setting should be mindful of its militarized history.
A reckless, all-out charge or desperate, do-or-die effort, modeled on the Japanese 'banzai charge' of the Second World War.
"Their final banzai assault on the market stunned established competitors."
Usually attributive ('a banzai charge', 'a banzai bid'); implies near-reckless abandon rather than mere boldness.
Rarely pluralized; when used as a countable noun for repeated cheers or charges, the regular English plural applies.
"The victory was met with three thunderous banzais from the assembled crowd."
Banzai literally means 'ten thousand years' — it was a wish for the Emperor's long life that became one of history's most fearsome battle cries.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of banzai
Banzai comes directly from Japanese, where it combines ban ('ten thousand') with zai ('years'), forming the wish 'may you live ten thousand years'. The phrase was used ceremonially to hail the Japanese emperor before becoming famous worldwide as a wartime battle cry. English adopted it in the late nineteenth century, and its association with reckless, all-out attacks solidified during the Second World War through the term 'banzai charge'. It shares its first element, ban ('ten thousand'), with other Japanese number-based expressions.
How banzai is actually used
As an exclamation it carries strong connotations of Japanese culture and can feel jingoistic or culturally loaded in some contexts; as a modifier, 'banzai' suggests headlong, near-suicidal daring. The word is informal and typically used with exclamatory force rather than in neutral prose.
Easily confused with banzai
Bonsai is the Japanese art of growing miniature trees in containers, while banzai is an exclamation wishing long life ('ten thousand years') — the two merely share a similar sound.