How To Make Gmail Forget An Email Address

Vanishing Act: Making Gmail Forget That Pesky Email Address!
Ever typed an email address into Gmail and then... BAM! It haunts you. Like that one song you can't get out of your head? We've all been there.
The "Recent Contacts" Trick
First, let's tackle the easiest method. Think of it like teaching Gmail a little memory trick.
Start composing a new email. In the "To" field, begin typing the email address you want to banish. See it pop up in the suggestions? Excellent!
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Now, here's the magic. Use your arrow keys (up and down) to highlight the offending address. Once it's glowing like a digital beacon, press the Delete key (or Backspace, depending on your keyboard). Poof! Gone... hopefully.
Sometimes, Gmail can be a little stubborn, like a toddler refusing to share their toys. If this doesn’t work, don’t fret! We have other options.
Delving into Your Contacts (The Slightly More Intense Approach)
Think of your Gmail contacts as a digital Rolodex. It's time to do some spring cleaning. We're going in!

Click on the Google apps icon (that little grid of dots in the upper-right corner). Find "Contacts". It might say "People" for some of you... same difference!
Now, in the Contacts search bar, type the email address that's causing you grief. If it exists as a full contact, it'll show up. If you only ever sent a single email, it will not exist as a full contact.
If you do find it, click on the contact's name. Then, look for the three little dots (usually near the top-right corner). Click on those dots, and a menu will appear, offering choices.

Select "Delete." This is the ultimate power move! Confirm your decision, and that email address will be erased from your Gmail memory. It will be gone! Vanished! Like a sock in the dryer!
The "Other Contacts" Abyss
Okay, sometimes Gmail hides things in a place called "Other Contacts." It's like the attic of your digital life.
In the Contacts menu (the one we just talked about), look for "Other Contacts" in the left-hand sidebar. If you don't see it, click "More" to expand the menu options.
Now, brace yourself. This list might be long. Search for the email address you're trying to evict. It might take some digging, like searching for a lost remote control.
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If you find it, click on the contact. Then, click the three little dots again. Select "Delete." Sayonara!
Gmail's Auto-Complete Blacklist (Unofficial Tip!)
Some people swear by this, and it might work for you.
Start composing an email to the address you want to ban. Send an email and mark it as spam. Gmail will take note of this.

While this is not a guaranteed solution, this should make it a whole lot less likely to appear as an auto-complete suggestion. The email and associated address is now on Gmail's bad side! Take that!
When All Else Fails... The "Nuclear Option" (Just Kidding... Mostly!)
Okay, I'm mostly kidding about the nuclear option. There is no need to start from scratch unless you really want to.
Before you do anything drastic, double-check that you've tried all the steps above carefully. Gmail usually cooperates, but sometimes it needs a little extra encouragement.
So go forth and conquer your auto-complete woes! With these tips, you'll be the master of your Gmail destiny. You've got this!
