怪獣|かいじゅうkaijuu[0]heiban (flat)

1. nounmonster
   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.

• Synonym怪物かいぶつNeutralFrightening, uncanny creatures in general, also figuratively people of exceptional ability; 「怪獣」 is narrower: a beastlike mysterious creature, as in tokusatsu works.
• SynonymモンスターNeutralA loanword for monsters, common in games; also a set label for unreasonable people, as in 「モンスターペアレント」, a fixed use that 「怪獣」 has no counterpart for.
• Related巨獣きょじゅうWrittenA huge beast, possibly a real animal; more at home in written/formal prose. 「怪獣」 stresses a mysterious creature of unknown identity.
• Related怪異かいいWrittenStrange phenomena or ghostly beings, with an eerie, occult flavor; favors written/formal prose. 「怪獣」 is a beast-shaped mysterious creature.

Use 「怪獣」 for mysterious creatures of unknown identity and the giant beasts of tokusatsu films. For frightening things in general pick 「怪物」, and in games 「モンスター」. 「巨獣」 suits huge real beasts, 「怪異」 eerie, ghostly matters.

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

1. 正体しょうたい不明ふめいの不思議ふしぎな生物せいぶつ。
2. 恐竜きょうりゅうからヒントを得えて創作そうさくされた、特別とくべつな力ちからを持もつ生物せいぶつ。