Question about removing contact

Is it possible to remove another iphone user's information from my phone and keep it from reappearing?  Let me explain.  I have deleted a contact on my phone.  I have made sure it is out of my email and also my icloud. I don't trust myself not to text this person and thought I was safe.  I realized when typing a name similar when sending a text message, the name and number popped up as a choice.  I don't want the distraction of knowing I can still access it.  It shows the name and number and the little blue conversation bubble indicating it's an imessage. I have done a search on my entire phone for the name or number and nothing shows up saying it is on the phone.  Is it in a cloud somewhere?  I deleted another iphone user last night just to see if it was an iphone issue.  With the contact gone, the name and number still popped up when I went to compose a text message when trying to type in their name.  It still came up eventhough the contact was removed.  I lost everything on my phone the other night and had to reboot and used my icloud to recover everything.  I thought that would remove it.  It didn't.  I have searched my icloud and it is not there.  Is there no way to keep it from popping up in my phone?  I honestly feel like I've tried everything. I hope this make sense.  Any and all help is greatly appreciated.