General synonyms:
* Luggage: This is a very common and general term.
* Bag: A broader term that can include many types of bags.
* Valise: An older, more formal word for a suitcase.
* Traveling bag: A more descriptive and neutral term.
More specific synonyms:
* Carry-on: A smaller suitcase designed to be carried onto an airplane.
* Trolley: A suitcase with wheels.
* Duffel bag: A large, cylindrical bag often made of canvas.
* Overnight bag: A smaller suitcase for short trips.
Informal synonyms:
* Kitbag: A colloquial term, often used for a bag for sports equipment.
* Grip: A slang term, especially used for a suitcase in a theatrical context.
The best synonym to use will depend on the specific situation and the tone you want to convey.