To clear a word from the dictionary on your Mac, type the word you wish to remove and then press and hold the Control key on your keyboard. Click the word and select the option 'Unlearn Spelling.'   This will remove the word from the dictionary and prevent it from being used in future spellings. If you need to clear multiple words from the dictionary, you can do so by repeating this process for each word.  Keep in mind that removing words from the dictionary may affect your ability to spell correctly in future documents. Therefore, it is important to remove words you are confident you will no longer need.