Reddit Advanced Blocking per Catst

NOTE: You can not see blocked user's comments and posts. But they can still see you. Use reddit's own block feature if you don't want to be seen by the other person.

Manuel blocking: Right click on their user name. It should be at the bottom of your drop down menu.

Auto-Block: If a user says a word(s) that is in the list, it blocks the user

Auto-Hide: If a user says a word(s) that is in the list, it hides the message and not block the user

Auto-Sweep: Add a subreddit you don't want to talk to, turn the feature on and go to the subreddit. It will go to each post, block the whole comment section, then go to the next post untill the whole subreddit is blocked.

Whitelists: If a user says a word(s) that is in the list BUT it has a whitelisted word, it does not hide or blcok the user. This can also be subreddits

Block decay: To prevent false positives, you can set the duration in which a block is considered still valid. For example, if you set to 30 days, somebody who has been blocked for 30 days will be unblocked.