General terms for head coverings:
* Headscarf: This is a very general term, but it could be used to describe a chador in some situations.
* Veil: This is another general term that could be used, but it doesn't specifically refer to a chador.
* Covering: This is a very broad term, but it could be used as a general descriptor.
More specific terms for clothing:
* Abaya: This is a long, loose-fitting robe worn by some Muslim women, and it shares similarities with the chador.
* Hijab: This refers to the headscarf worn by some Muslim women, which is often worn with other garments like an abaya or chador.
Other options:
* Full-length veil: This describes the chador's length and its function as a veil.
* Black cloak: This refers to the chador's color and shape.
Ultimately, the best synonym for "chador" will depend on the specific context and what you are trying to convey.