Formal term for suspicion of wrongdoing, often used in legal, police, or news contexts. Common in phrases like 嫌疑をかける (to cast suspicion on) and 嫌疑がかかる (to fall under suspicion).
He was arrested on suspicion of murder.
The politician is under suspicion of bribery.
The police suspected him of murder.
He is under suspicion of murder.
He cleared himself of suspicion by proving his alibi.
The suspicion against him is considered strong.
疑い is the plain, everyday word for suspicion or doubt, while 嫌疑 is a formal term reserved for legal or investigative contexts.
嫌疑 refers to suspicion of wrongdoing and is used in formal/legal writing, much like 廉, but 嫌疑 focuses on the doubt itself while 廉 marks the stated grounds for an action such as an arrest.
Sino-Japanese compound of 嫌 (けん, 'dislike, doubt') and 疑 (ぎ, 'doubt, suspicion'). The combination reinforces the idea of being suspected or doubted.