If you're OK deleting your browsing history, that'd be the easiest way: https://support.google.com/chrome/answer/95589?hl=en&co=GENIE.Platform%3DDesktop You MAY be able to delete just that sites history:

1. 3-dots menu, History, History; a separate tab opens
2. Click By group tab, click 3-dots to right of the website you want gone, 'Remove all from history'
3. History page (chrome://history) top-right has a search, search site, check box next to all sites you want gone, click Delete in top-right

You may also need to turn off various 'Suggestion'/Autocomplete settings. These seem to assume you are logged into a gmail/google account via website or logged into the browser itself: https://support.google.com/websearch/answer/106230?hl=en&co=GENIE.Platform%3DDesktop&oco=0 https://www.wikihow.com/Remove-Suggestions-on-Chrome

Delete a single sites cookies/cache/data from Chrome (which may not help the autocomplete/fill/suggestions):

1. Go to the website
2. Click padlock symbol to left of URL address
3. Cookies and site data
4. Manage cookies and site data
5. Click the padlock on each related site you see in this list

May also help: go to site, padlock, Site settings, Delete data in new tab (URL will be chrome://settings/content/siteDetails?site=https....)

If you're OK deleting your browsing history, that'd be the easiest way: https://support.google.com/chrome/answer/95589?hl=en&co=GENIE.Platform%3DDesktop You MAY be able to delete just that sites history:

1. 3-dots menu, History, History; a separate tab opens
2. Click By group tab, click 3-dots to right of the website you want gone, 'Remove all from history'
3. History page (chrome://history) top-right has a search, search site, check box next to all sites you want gone, click Delete in top-right

You may also need to turn off various 'Suggestion'/Autocomplete settings. These were covered in tukan's answer, but here is one of the official help articles on it. https://support.google.com/websearch/answer/106230?hl=en&co=GENIE.Platform%3DDesktop&oco=0 https://www.wikihow.com/Remove-Suggestions-on-Chrome

Delete a single sites cookies/cache/data from Chrome (which may not help the autocomplete/fill/suggestions):

1. Go to the website
2. Click padlock symbol to left of URL address
3. Cookies and site data
4. Manage cookies and site data
5. Click the padlock on each related site you see in this list

May also help: go to site, padlock, Site settings, Delete data in new tab (URL will be chrome://settings/content/siteDetails?site=https....)

Delete a single sites cookies/cache/data from Chrome:

1. Go to the website
2. Click padlock symbol to left of URL address
3. Cookies and site data
4. Manage cookies and site data
5. Click the padlock on each related site you see in this list

May also help: go to site, padlock, Site settings, Delete data in new tab (URL will be chrome://settings/content/siteDetails?site=https....)

If you're OK deleting your browsing history, that'd be the easiest way: https://support.google.com/chrome/answer/95589?hl=en&co=GENIE.Platform%3DDesktop You MAY be able to delete just that sites history:

1. 3-dots menu, History, History; a separate tab opens
2. Click By group tab, click 3-dots to right of the website you want gone, 'Remove all from history'
3. History page (chrome://history) top-right has a search, search site, check box next to all sites you want gone, click Delete in top-right

You may also need to turn off various 'Suggestion'/Autocomplete settings. These seem to assume you are logged into a gmail/google account via website or logged into the browser itself: https://support.google.com/websearch/answer/106230?hl=en&co=GENIE.Platform%3DDesktop&oco=0 https://www.wikihow.com/Remove-Suggestions-on-Chrome

Delete a single sites cookies/cache/data from Chrome (which may not help the autocomplete/fill/suggestions):

1. Go to the website
2. Click padlock symbol to left of URL address
3. Cookies and site data
4. Manage cookies and site data
5. Click the padlock on each related site you see in this list

May also help: go to site, padlock, Site settings, Delete data in new tab (URL will be chrome://settings/content/siteDetails?site=https....)