Commenced is the correct spelling.
The meeting has already commenced.
I therefore commenced with the hardcore bondage.
The boys then commenced to launch the boat.
Because your arrival was delayed, the meeting commenced without you.
Shuru
i dont know the context but i think it should be "A search has commenced" if your using past tense.
Commenced - verdict is read for the crime concluded - verdict is entered into record and begin serving the sentence.
US war in RVN commenced in 1955. US war against North Vietnam commenced in 1964.
ended, finished
Complete
defensed, commenced
began, commenced, started,