How to uninstall Vivaldi browser?

I've used the command "$ sudo apt-get --purge remove vivaldi"

But it simply doesn't work, and issues a notification like this

"$ Reading package lists ... Done Building dependency tree Reading state information ... Done

E: Unable to locate package vivaldi "

But the browser still remains on my device

2 Answers

If you used the repository to install. The package name is vivaldi-stable Hence,

sudo apt-get --purge remove vivaldi-stable

If you installed the deb package directly, follow the instructions on their site:

While using Vivaldi, open Vivaldi menu button Vivaldi menu > Help > About. Or type vivaldi://about to the address field.
Make a note of the Profile Path, minus Default.
Open Files and search for the Vivaldi folder following the path you noted above.
Quit Vivaldi.
Delete the entire Vivaldi folder.

In addition to removing the package in other answers...

If you want to clear all Vivaldi state this is the best I have found:

rm -i -rv ~/.cache/vivaldi ~/.local/lib/vivaldi ~/.config/vivaldi

Shown command prompts for every file, remove the -i to delete everything with prompts.