Did you know that you can mute someone you follow? Open their profile page, click on the icon located on the top right corner and select ‘Mute’. You can even mute a user until the date and time of your choice. Don't want that person to know you’re muting them? Make sure that the ‘Send mute notification’ is set to off. Your muted users are synced with the muted users you have set on Twitter.
You can also use the ‘Manage Muted Users’ section in the settings to add/remove users from your list of muted users.