diff --git a/code/__DEFINES/nanites.dm b/code/__DEFINES/nanites.dm
index bbedb1ea6530..9ca8bdf11c6d 100644
--- a/code/__DEFINES/nanites.dm
+++ b/code/__DEFINES/nanites.dm
@@ -58,3 +58,7 @@
 #define NES_SCAN_TYPE "Scan Type"
 #define NES_BUTTON_NAME "Button Name"
 #define NES_ICON "Icon"
+// MONKESTATION ADDITIONS
+#define NES_INVALID_PHRASE "Invalid Phrase"
+#define NES_PHRASE_REPLACEMENT "Phrase Replacement"
+#define NES_REPLACEMENT_MODE "Replacement Mode"
diff --git a/monkestation/code/modules/research/designs/nanite_designs.dm b/monkestation/code/modules/research/designs/nanite_designs.dm
index 544b639692f3..d91e9b32a770 100644
--- a/monkestation/code/modules/research/designs/nanite_designs.dm
+++ b/monkestation/code/modules/research/designs/nanite_designs.dm
@@ -469,6 +469,13 @@
 	program_type = /datum/nanite_program/bad_mood
 	category = list("Suppression Nanites")
 
+/datum/design/nanites/conversation_filter
+	name = "Conversation Filter"
+	desc = "The nanites pre-process words, granting the ability to filter out certain phrases."
+	id = "word_filter_nanites"
+	program_type = /datum/nanite_program/conversation_filter
+	category = list("Suppression Nanites")
+
 ////////////////////SENSOR NANITES//////////////////////////////////////
 
 /datum/design/nanites/sensor_health
diff --git a/monkestation/code/modules/research/nanites/nanite_programs/suppression.dm b/monkestation/code/modules/research/nanites/nanite_programs/suppression.dm
index f0c21fc651fc..0a33beb70ec6 100644
--- a/monkestation/code/modules/research/nanites/nanite_programs/suppression.dm
+++ b/monkestation/code/modules/research/nanites/nanite_programs/suppression.dm
@@ -268,3 +268,49 @@
 /datum/nanite_program/bad_mood/disable_passive_effect()
 	. = ..()
 	host_mob.clear_mood_event("nanite_sadness")
+
+/datum/nanite_program/conversation_filter
+	name = "Conversation Filter"
+	desc = "The nanites pre-process words, granting the ability to filter out certain phrases."
+	use_rate = 0.1
+	unique = FALSE
+	rogue_types = list(/datum/nanite_program/brain_misfire)
+
+/datum/nanite_program/conversation_filter/register_extra_settings()
+	. = ..()
+	extra_settings[NES_INVALID_PHRASE] = new /datum/nanite_extra_setting/text("")
+	extra_settings[NES_PHRASE_REPLACEMENT] = new /datum/nanite_extra_setting/text("\[Invalid Phrase Detected.\]")
+	extra_settings[NES_REPLACEMENT_MODE] = new /datum/nanite_extra_setting/boolean(TRUE, "Whole Sentence", "Phrase Only")
+
+/datum/nanite_program/conversation_filter/on_mob_add()
+	. = ..()
+	RegisterSignal(host_mob, COMSIG_MOVABLE_HEAR, PROC_REF(on_hear))
+
+/datum/nanite_program/conversation_filter/on_mob_remove()
+	UnregisterSignal(host_mob, COMSIG_MOVABLE_HEAR)
+
+/datum/nanite_program/conversation_filter/proc/on_hear(datum/source, list/hearing_args)
+	SIGNAL_HANDLER
+
+	if(!activated)
+		return
+
+	var/datum/nanite_extra_setting/phrase = extra_settings[NES_INVALID_PHRASE]
+	var/datum/nanite_extra_setting/replacement_mode = extra_settings[NES_REPLACEMENT_MODE]
+	var/datum/nanite_extra_setting/replacement_setting = extra_settings[NES_PHRASE_REPLACEMENT]
+	var/replacement_phrase = replacement_setting.get_value()
+
+	if(!phrase.get_value())
+		return
+
+	if(!replacement_phrase)
+		replacement_phrase = ""
+
+	if(findtext(hearing_args[HEARING_RAW_MESSAGE], phrase.get_value()))
+		if (replacement_mode.get_value())
+			hearing_args[HEARING_RAW_MESSAGE] = replacement_phrase
+		else
+			var/message = hearing_args[HEARING_RAW_MESSAGE]
+			message = replacetext(message, phrase.get_value(), replacement_phrase)
+			hearing_args[HEARING_RAW_MESSAGE] = message
+
diff --git a/monkestation/code/modules/research/techweb/all_nodes.dm b/monkestation/code/modules/research/techweb/all_nodes.dm
index 698a9c07f4fe..71a2f10f00bd 100644
--- a/monkestation/code/modules/research/techweb/all_nodes.dm
+++ b/monkestation/code/modules/research/techweb/all_nodes.dm
@@ -101,6 +101,7 @@
 		"paralyzing_nanites",
 		"selfscan_nanites",
 		"stun_nanites",
+		"word_filter_nanites",
 	)
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = 1000, TECHWEB_POINT_TYPE_NANITES = 1000)