偽・贋|にせnise[0]heiban (flat)

1. no-adjectiveimitation; fake; phony; counterfeit; forged; bogus; sham
   それは贋にせの真珠しんじゅにすぎない。↗

   It is merely an imitation pearl.
2. prefixpseudo-

• Synonym偽物にせものNeutralA noun for fakes and counterfeits, the everyday default. 「偽」 mostly works as a prefix, as in 「偽札」, though 「偽の〜」 is also possible.
• Synonym模造もぞうWrittenWritten style: copying an original, which may or may not be meant to deceive, as in 「模造紙」 or 「模造刀」. 「偽」 implies passing a fake off as genuine.
• SynonymフェイクCasualA loanword for anything fake or forged, also for jazz ad-libs and feints, as in 「フェイクニュース」. 「偽」 is the native Japanese word.
• SynonymインチキCasualColloquial for cheating and scams, also knockoffs, with a disparaging tone. 「偽」 refers to the counterfeit thing itself.
• SynonymいかものCasualA colloquial word for fakes that also covers odd, curious things, as in 「いかもの食い」; it is rare. 「偽」 stresses passing something off as the real thing.
• Synonym偽造品ぎぞうひんWrittenWritten style: goods or documents made illegally by improper means, common in news reports. 「偽」 has wider uses and mostly serves as a prefix.
• RelatedレプリカNeutralA loanword for replicas of trophies, artworks and artifacts; the focus is on the copying itself. 「偽」 implies passing the item off as genuine.
• Related虚言きょげんWrittenWritten style for lies, as in 「虚言癖」; it is limited to speech. 「偽」 leans toward counterfeit objects.
• Relatedまがい物まがいものCasualA colloquial word for things made in imitation of the real thing, often with a cheap, inferior nuance. 「偽」 is more concise and mostly a prefix.
• Related嘘偽りうそいつわりWrittenWritten style for lies and untruths, often in 「嘘偽りのない」. 「偽」 leans toward counterfeit objects, 「嘘偽り」 toward words.
• RelatedまやかしCasualColloquial: deceptive tricks and illusions, also fakes. 「偽」 points to concrete counterfeit items, 「まやかし」 to the trickery itself.
• RelatedまがいNeutralAs a noun it means imitations; as a suffix it means 'close to, in the vein of', as in 「詐欺まがい」. 「偽」 directly denotes a fake passed off as real.
• RelatedがせCasualSlang for false information and fakes, usually written 「ガセ」, as in 「ガセネタ」. 「偽」 is the ordinary word and carries no slangy flavor.
• Antonym真しんWrittenWritten style for truth and genuineness, often 「真の〜」, as in 「真の友」. It is the opposite of 「偽」 in the true-versus-fake sense.
• Antonym誠まことWrittenTruth and reality, or sincerity; it can also work as an adverb meaning 'indeed'. It stands opposite to 「偽」 in the true-versus-false sense.
• Antonym本物ほんものNeutralThe everyday word for the genuine article. It is the opposite of 「偽」 and 「偽物」 in the fake-goods sense.
• Antonym真正しんせいWrittenWritten style for something genuinely and legitimately authentic, seen in formal contexts. It is the opposite of the counterfeiting that 「偽」 denotes.

「偽」 works mainly as a prefix for things passed off as genuine, as in 「偽札」 and 「偽ブランド」. For fakes as a noun, 「偽物」 is the everyday default. 「レプリカ」 is for open replicas, 「模造」 for copies of an original, not necessarily meant to deceive, 「フェイク」 for fake news, 「偽造品」 for illegally made goods or documents, 「まがい物」 for cheap knockoffs, 「嘘偽り」 and 「虚言」 for lies, 「まやかし」 for trickery, 「紛い」 for a suffix as in 「詐欺まがい」, 「ガセ」 for false information, 「インチキ」 for scams. The opposite is 「本物」; 「真」「誠」「真正」 are written antonyms.

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

1. 本物ほんものではなく、本物ほんものに似にせて作つくられたもの。
2. 本当ほんとうではなく、そのように見みせかけることを表あらわす接頭辞せっとうじ。