# abbr > Manage abbreviations for the fish shell. > User-defined words are replaced with longer phrases after they are entered. > More information: . - Add a new abbreviation: `abbr --add {{abbreviation_name}} {{command}} {{command_arguments}}` - Rename an existing abbreviation: `abbr --rename {{old_name}} {{new_name}}` - Erase an existing abbreviation: `abbr --erase {{abbreviation_name}}` - Import the abbreviations defined on another host over SSH: `ssh {{host_name}} abbr --show | source`