What is a synonym for suspicion?

Here are some synonyms for suspicion, depending on the context and nuance you want to convey:

Formal:

* Doubt

* Misgiving

* Distrust

* Skepticism

* Apprehension

* Uncertainty

Informal:

* Hunch

* Gut feeling

* Inkling

* Wary

* Leery

* On the fence

More specific:

* Accusation (when suspicion is strong and directed at someone)

* Conjecture (when suspicion is based on little evidence)

* Guilt (when suspicion is internal and focused on oneself)

The best synonym to use will depend on the specific situation and the level of formality you want to achieve.