lemmy.ml has a slur filter active and built in that is on the aggressive side. Each server may have different filter words. If you post to somewhere that doesn’t have that word in the slur filter but yours does, others will see the word and you will see “removed”.

This is useful for servers that value a safe space for users against hate, bigotry vs. other servers that are a little more laissez-faire with censoring where appropriate.