Several footnotes in the NWT correctly define apostasy as "unfaithfulness".
That is spiritual unfaithfulness/adultery/fornication/prostitution/harlotry.
In scripture the Jews were called (spiritual) prostitutes (37 times in Ezekiel chapters 16 and 23).
They claimed a relationship with the God of Abraham.
Yet they lusted after other gods.
And they had frequent wanton spiritual intercourse with these gods.
To cover-up their own lewd apostasy the Watctower lyingly redefines the word to mean a dissenter (against the Watchtower).
Anyone who dissents is labelled an apostate.
Ray Franz discovered their apostasy.
He dissented.
He exposed their spiritual harlotry in detail (ISoCF and CoC).
They lyingly labelled him an apostate.
And many if not most exJWs say this is all fine.
Even worse, many exJWs proudly wear the label.
To show their proud support of Watchtower lies and cover-ups.
How sad...