Steam filters swear words and slurs by default in both Steam chat and games that support the filter. If you want to disable the Steam chat filter, you can. You can even add your own personal list of words that you want to filter.
This setting is available on your Steam settings page. To access it, click on your Steam account name at the top right of the Steam window and select “Store Preferences.”;
Scroll down to the “Community Content Settings” section. The options under “Chat Filtering” control the Steam chat filter.
To disable Steam’s chat filter, select “Do not filter strong swear words or gossip” under “Language settings”. You can also select “Allow strong swearing, but filter dirt.”
The default option is “Filter strong swear words and slurp with” ♥♥♥ “or” *** “.
By default, the “Do not filter text from my Steam friends” option is enabled. Steam does not filter offensive words that your friends send in messages. You can uncheck this box if you prefer Steam to apply this filter to your friend’s messages as well.
Under “Additional custom filtered words” you can customize the filter completely. To make Steam filtering another word, type it in the “Always filter these words” box and click “Add.” To ensure that Steam never filters a particular word, type it in the “Never filter these words” box and click “add.”
You can also download the lists as text files by clicking the “Download” button – or upload a list of words from a text file by clicking the “Upload” button.
When you are done, you can just leave the settings page. No need to click the “Save” button – Steam will apply your changes immediately.