This is the 1592nd most frequent Japanese word.
容疑
Suspicion or charge (of a crime).
"容疑" is used here to mean 'suspicion,' often related to legal or criminal contexts.
彼はその事件への関与の容疑をかけられています。
He is under suspicion of involvement in that incident.
Here, "容疑" is prefixed to "者" to form "容疑者," meaning 'suspect' in a criminal case.
警察は容疑者を慎重に取り調べています。
The police are carefully interrogating the suspect.
In this instance, "容疑" again means 'suspicion,' but the context highlights the resolution of doubt.