Japanese phrase
今回は参加しません。 kon kai wa san ka shi ma se n
Meaning
I won't participate this time.
When to use it
States that the speaker will not take part this time. It is a direct way to decline an activity or event, with a neutral and polite tone.
Example dialogue
来週の集まりに参加しますか？ rai shū no atsu ma ri ni san ka shi ma su ka
Are you joining next week's gathering?
すみません、今回は参加しません。 su mi ma se n kon kai wa san ka shi ma se n
Sorry, I won't be joining this time.