Use a minus sign before the word: `search term -excludedword`
Put the excluded word in quotes if it is a phrase: `search term -“excluded phrase”`
Exclude multiple words by adding each one with a minus sign: `search term -word1 -word2`
Combine exclusions with other operators if needed: `site:example.com search term -word`
Avoid spaces between the minus sign and the excluded word: `-word` not `- word`