how can i hide all my posts and activity on facebook from someone, without unfriending or blocking them?

[Nick]

i want to make it so someone can't see anything i post or any of my activity on facebook in their newsfeed or on my profile, but i don't want to block or unfriend them, how can i accomplish this?

[Zachary]

You have to go to your settings on Facebook and make a certain thing to post on so they can't see it

[Bug Bite1924]

When you go to post something, there's a little button next too the blue post button. Click on the arrow and it should say "Public, Friends, Only Me, and Custom." Go under custom, and type in that person's same under "Dont share this with:"

[abraXus]

add them to your restricted list

[Pangh]

go to settings(right upper-most button),
you'll see this:
Who can see my stuff? - Edit Who can see your future posts? - Public
click edit to change it.
you'll see a button with the word [public], click it.
you'll see the following options: [public, friends, only me, custom, close friends, family, friends list1, friends list2, etc.].
choose whom you want to address your posts in the future, for example if you created previously a friends list called "friends list1" and choosed it, people not added in the list will not be able to see future posts. If you have no friends lists choose custom and add people to whom you want future posts to be visible. People not added will not be able to see future posts.

Next step, change the audience of your previous posts. Like previous step go to settings(right upper-most button),
you'll see this:

Review all your posts and things you're tagged in - Use Activity Log
click Use Activity Log
you'll see a list with all your activity, posts, friends confirmation, friends requests, etc.
friends requests by default are private and its privacy cannot be reverted.
friends confirmations, posts and other activity are public, change its visibility by clicking the right button(pencil button), you'll see this:
[highlighted in timeline, allowed in timeline, hidden from timeline, unfriend],
choose hidden from timeline in order to avoid other people being not you to be able to see your previous activity.

Step 3, hide public posts you made and posts you shared with friends of your friends.
go to settings(right upper-most button),
you'll see this:
Limit the audience for posts you've shared with friends of friends or Public? - Limit Past Posts.
This options will let us to change the audience of all previous posts(only posts activity) at once from "friends of friends" and from "public" to "only friends", once done it cannot be reverted at once but you'll have to restore every post audience setting one by one. However such activity still can be seen if our friends tagged other friends with our posts. Click Limit Past Posts, click Limit Old Posts.

Step 4. Make your timeline private, if you don't want your activitiy to appear in google,
go to settings(right upper-most button),
you'll see this:
Do you want other search engines to link to your timeline? - on - Edit
click Edit and turn this feature off.

[Lenny]

You can add this user to your "Restricted List"

What happens when I add someone to the Restricted list?

When you add someone to your Restricted list, they'll only be able to see your Public content or posts that you tag them in. So if you put your boss on your Restricted list, post a photo and choose Friends as the audience, your boss (and anyone else on Restricted) won’t see that photo. However, if you add a tag of your boss to the photo, we’ll let them know they’re in it and they’ll be able to see the photo. If someone else tries to tag your boss in one of your photos, you’ll get to approve this tag from your pending posts.