begun
Definitions
Past participle of begin; having started or commenced.
In a state of having been initiated or set into motion.
Examples
The meeting has already begun, so please take your seat quietly.
A new chapter of her life had begun the moment she moved to the city.
The construction work has begun on the new bridge across the river.
Synonyms
started commenced initiated launched opened originated inaugurated
Antonyms
ended finished completed concluded terminated stopped halted