What is a noun for excursion?

There isn't a single perfect noun synonym for "excursion" that captures all its nuances. Here are some options, depending on the context:

For a short trip:

* Outing: This is a general term for a short trip, often for pleasure.

* Trip: More general than "outing," but can also apply to longer journeys.

* Journey: A longer trip, often with a specific purpose.

* Sojourn: A temporary stay in a place, often for pleasure.

For a planned, organized trip:

* Tour: A guided trip with a specific itinerary.

* Expedition: A planned journey for exploration or research.

* Voyage: A long journey, especially by sea or space.

For a more informal, adventurous trip:

* Adventure: An exciting and often risky undertaking.

* Exploration: A journey to discover new places or things.

* Ramble: A leisurely and aimless walk.

The best noun to use will depend on the specific context of the excursion.