under suspicion Definition

suspicion
noun

1. An act, instance or feeling of suspecting.

Thesaurus: misgiving, mistrust, doubt, qualm, jealousy, resentment; Antonym: trust.
2. A belief or opinion that is based on very little evidence.

Thesaurus: conjecture, guess, impression, intuition, notion, surmise.
3. A slight quantity; a trace.

Derivative: suspicionless
adj

Idiom: above suspicion

Too highly respected to be suspected of a crime or wrongdoing.

Idiom: on suspicion

As a suspect.
Example: held on suspicion of murder

Idiom: under suspicion

Suspected of a crime or wrongdoing.

Etymology: 14c: from French suspecioun, from Latin suspicio, from suspicere to suspect.