If you accidentally downloaded Enhanced Dictation via System Preferences >> Dictation (United States over 700M) and now your disk space is full. You want to release occupied it but don’t know how to find the files offlines to delete them. Follow these steps to find and remove a language for Dictation offlines.
How to Delete Downloaded Enhanced Dictation
First, make sure you have enhanced dictation turned off. You can click Apple icon >> System Preferences… >> Dictation & Speed.
Then, open the Finder >> Click Go >> Go to Folder… or you can press shift + command + G and paste the path into the Finder.
/System/Library/Speech/Recognizers/SpeechRecognitionCoreLanguages
Finally, let delete Dictation offlines which you want.