diff --git a/website/common/locales/en/groups.json b/website/common/locales/en/groups.json
index 54ab327ab0..d5342075d7 100644
--- a/website/common/locales/en/groups.json
+++ b/website/common/locales/en/groups.json
@@ -16,9 +16,11 @@
   "wiki": "Wiki",
   "resources": "Resources",
   "communityGuidelines": "Community Guidelines",
-  "bannedWordUsed": "Oops! Looks like this post contains a swearword or reference to an addictive substance or adult topic (<%= swearWordsUsed %>). Habitica keeps our chat very clean. Feel free to edit your message so you can post it! You must remove the word, not just censor it.",
+  "bannedWordUsed": "Oops! Looks like this post contains a swear word or reference to an addictive substance or adult topic (<%= swearWordsUsed %>). Habitica keeps our chat very clean. Feel free to edit your message so you can post it! You must remove the word, not just censor it.",
   "bannedSlurUsed": "Your post contained inappropriate language, and your chat privileges have been revoked.",
-  "challengeBannedWordsAndSlurs": "Your Challenge contains one or more words that violate Habitica’s community guidelines.",
+  "challengeBannedSlurs": "Your Challenge contains a slur which violate Habitica’s community guidelines and your chat and Challenge creation privileges have been revoked. Contact admin@habitica.com for more information.",
+  "challengeBannedWords": "Your Challenge contains one or more swear words or references to an adult topic. Please edit your Challenge so you can save it. You must remove the word, not just censor it.",
+  "challengeBannedSlursPrivate": "Your Challenge contains a slur which violates Habitica's community guidelines. Please remove it in order to save your Challenge.",
   "party": "Party",
   "usernameCopied": "Username copied to clipboard.",
   "create": "Create",
diff --git a/website/server/controllers/api-v3/challenges.js b/website/server/controllers/api-v3/challenges.js
index 0ee37cca32..c9538ae728 100644
--- a/website/server/controllers/api-v3/challenges.js
+++ b/website/server/controllers/api-v3/challenges.js
@@ -5,6 +5,8 @@ import { model as Challenge } from '../../models/challenge';
 import bannedWords from '../../libs/bannedWords';
 import bannedSlurs from '../../libs/bannedSlurs';
 import { getMatchesByWordArray } from '../../libs/stringUtils';
+import * as slack from '../../libs/slack';
+import { getUserInfo } from '../../libs/email';
 import {
   model as Group,
   basicFields as basicGroupFields,
@@ -227,17 +229,60 @@ api.createChallenge = {
       user, groupId: req.body.group, fields: basicGroupFields, optionalMembership: true,
     });
 
-    // checks challenge for slurs and banned words
+    // checks public challenge for slurs
     if (group.privacy === 'public'
       && ((textContainsBannedSlur(req.body.name))
             || (textContainsBannedSlur(req.body.shortName))
             || (textContainsBannedSlur(req.body.summary))
-            || (textContainsBannedSlur(req.body.description))
-            || (textContainsBannedWord(req.body.name))
+            || (textContainsBannedSlur(req.body.description)))) {
+      // slack flagged-posts
+      const authorEmail = getUserInfo(user, ['email']).email;
+      slack.sendSlurNotification({
+        authorEmail,
+        author: user,
+        group,
+        body: [req.body.name,
+          req.body.shortName,
+          req.body.summary,
+          req.body.description],
+      });
+
+      // user flags
+      user.flags.chatRevoked = true;
+      user.flags.chatShadowMuted = true;
+      await user.save();
+
+      // toast notification
+      throw new BadRequest(res.t('challengeBannedSlurs'));
+    }
+
+    // checks public challenges for banned words
+    if (group.privacy === 'public'
+      && ((textContainsBannedWord(req.body.name))
             || (textContainsBannedWord(req.body.shortName))
             || (textContainsBannedWord(req.body.summary))
             || (textContainsBannedWord(req.body.description)))) {
-      throw new BadRequest(res.t('challengeBannedWordsAndSlurs'));
+      // toast error
+      throw new BadRequest(res.t('challengeBannedWords'));
+    }
+
+    // checks private challenge for slurs
+    if (group.privacy === 'private'
+      && ((textContainsBannedSlur(req.body.name))
+            || (textContainsBannedSlur(req.body.shortName))
+            || (textContainsBannedSlur(req.body.summary))
+            || (textContainsBannedSlur(req.body.description)))) {
+      // toast notification
+      throw new BadRequest(res.t('challengeBannedSlursPrivate'));
+    }
+
+    // checks private challenge for swears -- allowed unless user flags
+    if (group.privacy === 'private'
+      && ((textContainsBannedWord(req.body.name))
+            || (textContainsBannedWord(req.body.shortName))
+            || (textContainsBannedWord(req.body.summary))
+            || (textContainsBannedWord(req.body.description)))) {
+      await user.save();
     }
 
     const { savedChal } = await createChallenge(user, req, res);