Open Finder
Go to the Applications folder
Find the app you want to delete
Drag the app to the Trash
Or right-click the app and choose Move to Trash
Enter your Mac password if prompted
Empty the Trash to remove the app completely
If the app came from the App Store, open Launchpad
Click and hold the app icon until it jiggles
Click the X on the app icon if it appears
If the app has an uninstaller, open it and follow the prompts
Remove leftover files from Library folders if needed