https://dota.eurobattle.net/la/forum/index.php/topic,1425.0.html#post_ingame a) Excessive profanity
- Excessive profanity may lead to a mute or a ban, especially in regard to family, religion and nationality. Definition of excessive: using it multiple times/constantly through the game, going on a tirade against a player, using particularly distasteful/sick wording and similar.
Note: You are advised to use the !ignore command against flamer whenever possible.
To conclude 1 whisp isn/t considered as excessive profanity you are advised to use !ignore /squelch commands.