diff --git a/Content.Server/Chat/Managers/ChatSanitizationManager.cs b/Content.Server/Chat/Managers/ChatSanitizationManager.cs
index d4a284b6cd..77119eefc0 100644
--- a/Content.Server/Chat/Managers/ChatSanitizationManager.cs
+++ b/Content.Server/Chat/Managers/ChatSanitizationManager.cs
@@ -54,6 +54,7 @@ public sealed class ChatSanitizationManager : IChatSanitizationManager
         { "._.", "chatsan-surprised" },
         { ".-.", "chatsan-confused" },
         { "-_-", "chatsan-unimpressed" },
+        { "smh", "chatsan-unimpressed" },
         { "o/", "chatsan-waves" },
         { "^^/", "chatsan-waves" },
         { ":/", "chatsan-uncertain" },
@@ -66,10 +67,11 @@ public sealed class ChatSanitizationManager : IChatSanitizationManager
         { "lel.", "chatsan-laughs" },
         { "kek", "chatsan-laughs" },
         { "kek.", "chatsan-laughs" },
+        { "rofl", "chatsan-laughs" },
         { "o7", "chatsan-salutes" },
         { ";_;7", "chatsan-tearfully-salutes"},
         { "idk", "chatsan-shrugs" },
-        { "idk.", "chatsan-shrugs" }
+        { "idk.", "chatsan-shrugs" },
     };
 
     private bool _doSanitize;
diff --git a/Content.Server/Chat/Systems/ChatSystem.cs b/Content.Server/Chat/Systems/ChatSystem.cs
index 24e13bcde2..455d34c907 100644
--- a/Content.Server/Chat/Systems/ChatSystem.cs
+++ b/Content.Server/Chat/Systems/ChatSystem.cs
@@ -1,6 +1,8 @@
 using System.Globalization;
 using System.Linq;
 using System.Text;
+using Content.Server.Speech.EntitySystems;
+using Content.Server.Speech.Components;
 using Content.Server.Administration.Logs;
 using Content.Server.Administration.Managers;
 using Content.Server.Chat.Managers;
@@ -53,6 +55,7 @@ public sealed partial class ChatSystem : SharedChatSystem
     [Dependency] private readonly MobStateSystem _mobStateSystem = default!;
     [Dependency] private readonly SharedAudioSystem _audio = default!;
     [Dependency] private readonly SharedInteractionSystem _interactionSystem = default!;
+    [Dependency] private readonly ReplacementAccentSystem _wordreplacement = default!;
 
     public const int VoiceRange = 10; // how far voice goes in world units
     public const int WhisperClearRange = 2; // how far whisper goes while still being understandable, in world units
@@ -690,6 +693,8 @@ public sealed partial class ChatSystem : SharedChatSystem
     private string SanitizeInGameICMessage(EntityUid source, string message, out string? emoteStr, bool capitalize = true, bool punctuate = false, bool capitalizeTheWordI = true)
     {
         var newMessage = message.Trim();
+        newMessage = SanitizeMessageReplaceWords(newMessage);
+        
         if (capitalize)
             newMessage = SanitizeMessageCapital(newMessage);
         if (capitalizeTheWordI)
@@ -737,6 +742,20 @@ public sealed partial class ChatSystem : SharedChatSystem
         return message;
     }
 
+    [ValidatePrototypeId<ReplacementAccentPrototype>]
+    public const string ChatSanitize_Accent = "chatsanitize";
+
+    public string SanitizeMessageReplaceWords(string message)
+    {
+        if (string.IsNullOrEmpty(message)) return message;
+
+        var msg = message;
+
+        msg = _wordreplacement.ApplyReplacements(msg, ChatSanitize_Accent);
+
+        return msg;
+    }
+
     /// <summary>
     ///     Returns list of players and ranges for all players withing some range. Also returns observers with a range of -1.
     /// </summary>
diff --git a/Resources/Locale/en-US/speech/speech-chatsan.ftl b/Resources/Locale/en-US/speech/speech-chatsan.ftl
new file mode 100644
index 0000000000..756dfc3f99
--- /dev/null
+++ b/Resources/Locale/en-US/speech/speech-chatsan.ftl
@@ -0,0 +1,116 @@
+chatsan-word-1 = omg
+chatsan-replacement-1 = oh my god
+
+chatsan-word-2 = omfg
+chatsan-replacement-2 = oh my fucking god
+
+chatsan-word-3 = ong
+chatsan-replacement-3 = on god
+
+chatsan-word-4 = wtf
+chatsan-replacement-4 = what the fuck
+
+chatsan-word-5 = ffs
+chatsan-replacement-5 = for fuck's sake
+
+chatsan-word-6 = tf
+chatsan-replacement-6 = the fuck
+
+chatsan-word-7 = afaik
+chatsan-replacement-7 = as far as i know
+
+chatsan-word-8 = ik
+chatsan-replacement-8 = i know
+
+chatsan-word-9 = ikr
+chatsan-replacement-9 = i know, right
+
+chatsan-word-10 = idc
+chatsan-replacement-10 = i don't care
+
+chatsan-word-12 = tbh
+chatsan-replacement-12 = to be honest
+
+chatsan-word-13 = u
+chatsan-replacement-13 = you
+
+chatsan-word-14 = ur
+chatsan-replacement-14 = your
+
+chatsan-word-15 = mk
+chatsan-replacement-15 = mmm, okay
+
+chatsan-word-16 = iirc
+chatsan-replacement-16 = if i remember correctly
+
+chatsan-word-17 = np
+chatsan-replacement-17 = no problem
+
+chatsan-word-18 = omw
+chatsan-replacement-18 = on my way
+
+chatsan-word-19 = nvm
+chatsan-replacement-19 = nevermind
+
+chatsan-word-20 = imo
+chatsan-replacement-20 = in my opinion
+
+chatsan-word-21 = pls
+chatsan-word-22 = plz
+chatsan-word-23 = plox
+chatsan-replacement-please = please
+
+chatsan-word-24 = fr
+chatsan-replacement-24 = for real
+
+chatsan-word-25 = brb
+chatsan-replacement-25 = be right back
+
+chatsan-word-26 = btw
+chatsan-replacement-26 = by the way
+
+chatsan-word-27 = jk
+chatsan-replacement-27 = just kidding
+
+chatsan-word-28 = thx
+chatsan-replacement-28 = thanks
+
+chatsan-word-29 = ty
+chatsan-replacement-29 = thank you
+
+chatsan-word-30 = afk
+chatsan-replacement-30 = ssd
+
+chatsan-word-31 = stfu
+chatsan-replacement-31 = shut the fuck up
+
+chatsan-word-32 = gtg
+chatsan-replacement-32 = got to go
+
+chatsan-word-33 = gl
+chatsan-replacement-33 = good luck
+
+chatsan-word-34 = hbu
+chatsan-replacement-34 = how about you
+
+chatsan-word-35 = hmu
+chatsan-replacement-35 = hit me up
+
+chatsan-word-36 = gtfo
+chatsan-replacement-36 = get the fuck out
+
+chatsan-word-37 = wdym
+chatsan-replacement-37 = what do you mean
+
+chatsan-word-38 = mf
+chatsan-replacement-38 = motherfucker
+
+chatsan-word-39 = etc
+chatsan-word-40 = etc.
+chatsan-replacement-etcetera = etcetera
+
+chatsan-word-41 = fyi
+chatsan-replacement-41 = for your information
+
+chatsan-word-42 = wyd
+chatsan-replacement-42 = what you doing
diff --git a/Resources/Prototypes/Accents/word_replacements.yml b/Resources/Prototypes/Accents/word_replacements.yml
index befcfa6e6c..716196cbf4 100644
--- a/Resources/Prototypes/Accents/word_replacements.yml
+++ b/Resources/Prototypes/Accents/word_replacements.yml
@@ -490,4 +490,49 @@
     accent-archaic-replaced-231: accent-archaic-replacement-231
     accent-archaic-replaced-232: accent-archaic-replacement-232
 
-
+# For the chat sanitization system
+- type: accent
+  id: chatsanitize
+  wordReplacements:
+    chatsan-word-1: chatsan-replacement-1
+    chatsan-word-2: chatsan-replacement-2
+    chatsan-word-3: chatsan-replacement-3
+    chatsan-word-4: chatsan-replacement-4
+    chatsan-word-5: chatsan-replacement-5
+    chatsan-word-6: chatsan-replacement-6
+    chatsan-word-7: chatsan-replacement-7
+    chatsan-word-8: chatsan-replacement-8
+    chatsan-word-9: chatsan-replacement-9
+    chatsan-word-10: chatsan-replacement-10
+    chatsan-word-11: chatsan-replacement-11
+    chatsan-word-12: chatsan-replacement-12
+    chatsan-word-13: chatsan-replacement-13
+    chatsan-word-14: chatsan-replacement-14
+    chatsan-word-15: chatsan-replacement-15
+    chatsan-word-16: chatsan-replacement-16
+    chatsan-word-17: chatsan-replacement-17
+    chatsan-word-18: chatsan-replacement-18
+    chatsan-word-19: chatsan-replacement-19
+    chatsan-word-20: chatsan-replacement-20
+    chatsan-word-21: chatsan-replacement-please
+    chatsan-word-22: chatsan-replacement-please
+    chatsan-word-23: chatsan-replacement-please
+    chatsan-word-24: chatsan-replacement-24
+    chatsan-word-25: chatsan-replacement-25
+    chatsan-word-26: chatsan-replacement-26
+    chatsan-word-27: chatsan-replacement-27
+    chatsan-word-28: chatsan-replacement-28
+    chatsan-word-29: chatsan-replacement-29
+    chatsan-word-30: chatsan-replacement-30
+    chatsan-word-31: chatsan-replacement-31
+    chatsan-word-32: chatsan-replacement-32
+    chatsan-word-33: chatsan-replacement-33
+    chatsan-word-34: chatsan-replacement-34
+    chatsan-word-35: chatsan-replacement-35
+    chatsan-word-36: chatsan-replacement-36
+    chatsan-word-37: chatsan-replacement-37
+    chatsan-word-38: chatsan-replacement-38
+    chatsan-word-39: chatsan-replacement-etcetera
+    chatsan-word-40: chatsan-replacement-etcetera
+    chatsan-word-41: chatsan-replacement-41
+    chatsan-word-42: chatsan-replacement-42