How to say "monster" in Japanese

Choosing the right word
  • nounThe direct borrowing of the English word, covering its familiar senses: frightening creatures in games and fantasy stories, and figuratively something or someone monstrous.
    世界中せかいじゅうのモンスターと戦たたかえるのかぁ・・・。腕うでがなるなぁー。↗
    Fighting with monsters all over the world ... I just can't wait.
  • 怪獣かいじゅうJLPT N1approx.Common
    nounA giant, beastlike monster; this is the word behind the English loanword 'kaiju', evoking the enormous creatures of monster films.
    信しんじてもらえないだろうけど、茂しげみの中なかから怪獣かいじゅうが現あらわれたんだよ。↗
    Believe it or not, a monster emerged from the bush.
  • 怪物かいぶつCommon
    nounA monster as a frightening, abnormal creature; it is also used figuratively of a person regarded as monstrous, whether terrifying or endowed with astounding ability.
    The monster's smile was cruel.
  • 化け物ばけものCommon
    nounAn uncanny supernatural creature, covering the goblin, apparition and ghost senses: something eerie that appears or haunts; it can also describe strength or ability of monstrous degree.
    その建物たてものは化け物ばけものみたいだ。↗
    The building is a monstrous structure.
  • 妖怪ようかいCommon
    nounReally a ghost, apparition or phantom — a supernatural being of folklore — rather than a monster in the ordinary sense, so it is seldom the word you want for 'monster'.
    一いち匹ひきの妖怪ようかいがヨーロッパを徘徊はいかいしている。共産主義きょうさんしゅぎという妖怪ようかいが。↗
    A spectre is haunting Europe ― the spectre of communism.

Choose 「モンスター」 as the direct loanword for game and fantasy monsters, 怪獣 for giant beastlike creatures, 怪物 for monstrous beings or people, 「化け物」 for eerie supernatural creatures, and 妖怪 for folklore apparitions rather than true monsters.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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