This party is underway.
The definition of underway is something that has already begun, or that is going on now.
When a play has already started, this is an example of a time when the play is underway.
- moving; advancing; making progress
- Naut. not anchored or moored or aground
- In motion or operation.
- Already commenced or initiated; in progress.
- Nautical Neither anchored nor moored to a fixed object.
(comparative more underway, superlative most underway)
From under- +"Ž way