This is the 13181st most frequent Turkish word.
katılmayacağım
"I will not participate."
In this sentence, 'katılmayacağım' is used to express the speaker's intention not to join or participate in an event (the meeting).
Toplantıya katılmayacağım.
I will not attend the meeting.
In this context, 'katılmayacağım' explains a deliberate personal decision not to engage in the event based on the speaker's opinion.
Bu etkinliği ilginç bulmadığımdan dolayı katılmayacağım.
I will not partake in this event because I do not find it interesting.
Here, 'katılmayacağım' conveys inability or decision not to take part in an activity conditioned on timing (if the class is held on Friday).