How to say "credible" in Japanese

• まことしやか
  na-adjectiveCovers 'credible' only in the sense of plausible-sounding but untrue, as the gloss indicates. It describes lies or rumors that seem believable; usually written in kana alone and less common than other options.
• 信頼に足るしんらいにたる
  expression, prenominal modifierCredible meaning worthy of trust or reliance — a dependable source, witness, or piece of evidence. It implies genuine creditworthiness rather than mere appearance, so it fits contexts where trustworthiness is at issue.
• 確たるかくたる
  pre-noun adjectivalCredible in the sense of certain, definite, or well-founded. It suits claims or information that are solid and leave no real doubt. Note that 'credible' is only one of its senses, since it chiefly means 'certain'.

Use 「まことしやか」 for things that merely sound credible (typically lies or rumors), 「信頼に足る」 for genuinely trustworthy people or sources, and 「確たる」 for credible in the sense of solid or certain.

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

• まことしやかplausible (but untrue)
• 信頼に足るしんらいにたるauthentic
• 確たるかくたるcertain