How do you say doubt in Japanese?
— 不審 (ふしん, fushin), 疑い (うたがい, utagai), 疑問 (ぎもん, gimon)

Related synonyms for doubt in Japanese
question質問 (しつもん, shitsumon)
Derivative terms for doubt in Japanese
question質問 (しつもん, shitsumon)