What is a synonym for-chagrin?

Here are some synonyms for chagrin, depending on the specific nuance you want to convey:

General synonyms:

* Disappointment

* Mortification

* Humiliation

* Embarrassment

* Vexation

* Frustration

* Dismay

* Regret

* Discomfort

More specific synonyms:

* For a strong feeling of humiliation: Shame, disgrace, ignominy

* For a feeling of annoyance and frustration: Irritation, annoyance, exasperation

* For a feeling of disappointment and regret: Dejection, despondency, woe

The best synonym will depend on the context of your sentence.