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This article contains sensitive material.

ROBLOX has a text filter which prevents players from seeing profanity and which blocks personally identifiable information. This filter replaces the now-discontinued Safe Chat which was previously used to prevent young players from sending messages that were not pre-programmed. The text filter is provided by the CommunitySift service. Since CommunitySift uses multiple rules and text classification techniques to filter phrases, the lists in this article are not representative of the words filtered.

In games, text filtering is done with two functions of the Chat service. FilterStringAsync is used to filter messages sent by one player and intended for a single other player, while FilterStringForBroadcast is used to filter messages broadcasted to all players. To be compliant with the filtering rules, game developers must filter all messages which are shown to players in GUI objects, character names, etc. If the place's creator failed to comply with this rule, their game would be put Under Review.

2017 false filtering outcry

Since the new logo has appeared, many people can say the expression "I'm gay" in-game and outside of game. This has not yet been resolved. Also, people are annoyed by the fact they cannot say words such as "the" and "my", causing support groups to rise and people complaining about it on the forums.

This has now lead to ROBLOX revamping their filtering system. The parents of accounts under 12 can now only allow communications with people on the player's friend list or restrict chatting altogether. This also means that the filtering system for accounts under 12 and 13+ have become aggressive, blocking any numbers for under 12s and simple words. As stated before, this also made the community very upset.

List of filtered words

The chat uses a predefined list of words to filter. Messages that match one of the words in this list will not be broadcasted to other players at all.

This is the word blacklist used by ROBLOX, extracted from diogenes.fnt:


  • 4uck
  • ahole
  • anally
  • anus
  • ashole
  • asholes
  • asshole
  • assholes
  • asskisser
  • beastiality
  • beastility
  • bestiality
  • bich
  • biches
  • bicth
  • bitc
  • bitch
  • bitcher
  • bitchers
  • bitches
  • bitchin
  • bitching
  • bitchs
  • blowjob
  • blowjobs
  • boner
  • bullshit
  • bulshit
  • buttfuck
  • buttfucker
  • butthair
  • buttsex
  • buttsecs
  • buttseks
  • chink
  • circlejerk
  • clit
  • c0nd0ms
  • cond0ms
  • c0ndoms
  • cock
  • cock.
  • cocks
  • cocksuck
  • cocksucked
  • cocksucker
  • cocksucking
  • cocksucks
  • cok
  • condom
  • condoms
  • cooter
  • cum
  • cummer
  • cumming
  • cums
  • cumshot
  • cumshot
  • cunilingus
  • cunillingus
  • cunnilingus
  • cunt
  • cuntlick
  • cuntlicker
  • cuntlicking
  • cunts
  • cyberfuc
  • cyberfuck
  • cyberfucked
  • cyberfucker
  • cyberfuckers
  • cyberfucking
  • dick
  • dicks
  • dike
  • dildo
  • dildo
  • dildos
  • dildos
  • dipshit
  • douche
  • douchebag
  • dyke
  • ejaculate
  • ejaculated
  • ejaculates
  • ejaculating
  • ejaculatings
  • ejaculation
  • f***er
  • f***ing
  • fag
  • faget
  • fagg
  • fagget
  • fagging
  • faggit
  • faggot
  • faggs
  • fagit
  • fagot
  • fagots
  • fags
  • fapper
  • fapping
  • fappin
  • fawk
  • fcking
  • felatio
  • felatio
  • fellatio
  • fingerbang
  • fingerfuck
  • fingerfucked
  • fingerfucker
  • fingerfuckers
  • fingerfucking
  • fingerfucks
  • fistfuck
  • fistfucked
  • fistfucker
  • fistfuckers
  • fistfucking
  • fistfuckings
  • fistfucks
  • focking
  • fuck
  • fuck!
  • fucke
  • fucked
  • fucken
  • fucker
  • fuckers
  • fuckin
  • fucking
  • fuckings
  • fuckkkkkkkkkkkkkkkkk
  • fuckme
  • fucks
  • fucktard
  • fuckyou
  • fuk
  • fuker
  • fukin
  • fuking
  • fukk
  • fuks
  • furburger
  • gangbang
  • gangbanged
  • gangbangs
  • gay
  • gaysex
  • gazongas
  • gazongers
  • gonads
  • gook
  • hardcoresex
  • hardon
  • homo
  • hooker
  • horniest
  • horny
  • hotsex
  • hump
  • jackass
  • jackingoff
  • jackoff
  • jack-off
  • jap
  • jerk-off
  • jew
  • jism
  • jiz
  • jizm
  • jizz
  • kike
  • kkk
  • kock
  • kondum
  • kondums
  • kum
  • kummer
  • kumming
  • kums
  • kunilingus
  • lesbian
  • lesbo
  • lusting
  • merde
  • molest
  • mothafuck
  • mothafuck
  • mothafucka
  • mothafucka
  • mothafuckas
  • mothafuckas
  • mothafuckaz
  • mothafuckaz
  • mothafucked
  • mothafucked
  • mothafucker
  • mothafucker
  • mothafuckers
  • mothafuckers
  • mothafuckin
  • mothafuckin
  • mothafucking
  • mothafucking
  • mothafuckings
  • mothafuckings
  • mothafucks
  • mothafucks
  • motherfuck
  • motherfuck
  • motherfucked
  • motherfucker
  • motherfucker
  • motherfuckers
  • motherfuckers
  • motherfuckin
  • motherfuckin
  • motherfucking
  • motherfucking
  • motherfuckings
  • motherfuckings
  • motherfucks
  • motherfucks
  • nazi
  • niger
  • nigga
  • niggas
  • nigger
  • nigger
  • niggers
  • niggers
  • orgasim
  • orgasims
  • orgasm
  • orgasms
  • pecker
  • penis
  • phonesex
  • phuked
  • phuking
  • phukked
  • phukking
  • phuk
  • phuks
  • phuq
  • pimp
  • pissoff
  • porn
  • porno
  • pornography
  • pornos
  • prick
  • pricks
  • prostitute
  • pusies
  • pussies
  • pussy
  • pussys
  • pusy
  • pusys
  • queer
  • r@pe
  • r@ped
  • rape
  • raped
  • schlong
  • sex
  • sexx
  • sexxx
  • shitfull
  • shiting
  • shitings
  • shits
  • shitted
  • shitter
  • shitters
  • shitting
  • shittings
  • shitty
  • shity
  • slut
  • sluts
  • smut
  • snatch
  • sodomite
  • sodomize
  • sodomizer
  • sodomy
  • spunk
  • suck
  • tramp
  • twat
  • vagina
  • vibrator
  • wang
  • wank
  • wanker
  • wetback
  • whore
  • wop

A different filter is used for messages in games and on the website, when they are not in in-game chat, which replaces letters of words that are filtered by the "#" sign instead of blocking the messages completely. This filter list is not public.

This is a list of the words that are known to be filtered:


  • allahu akbar
  • anally
  • anus
  • asshole
  • bestiality
  • bitch
  • bitches
  • bitching
  • blowjob
  • boner
  • bullshit
  • chink
  • cock
  • cocks
  • condom
  • condoms
  • cum
  • cunnilingus
  • cunt
  • cunts
  • dick
  • dicks
  • dike
  • dildo
  • dildos
  • douche
  • dyke
  • ejaculate
  • ejaculated
  • ejaculates
  • ejaculating
  • ejaculation
  • fag
  • fagging
  • faggot
  • fagot
  • fagots
  • fags
  • fellatio
  • fuck
  • fucked
  • fucking
  • fucks
  • gay
  • genocide
  • gonads
  • gook
  • hitler
  • homo
  • hooker
  • horniest
  • horny
  • hump
  • jackass
  • jap
  • jew
  • kike
  • kunt
  • kunts
  • lesbian
  • lusting
  • molest
  • naughty
  • nazi
  • nigger
  • niggers
  • online dater
  • orgasm
  • orgasms
  • pecker
  • penis
  • pimp
  • porn
  • porno
  • pornography
  • pornos
  • pregnant
  • prick
  • pricks
  • prostitute
  • pussies
  • pussy
  • queer
  • rape
  • raped
  • sex
  • shit
  • shits
  • shitted
  • shitting
  • slut
  • sluts
  • smut
  • snatch
  • sodomite
  • sodomy
  • spunk
  • suck
  • tramp
  • twat
  • vagina
  • vibrator
  • wang
  • wetback
  • whore
  • wop
  • twitter
  • bhenchod
  • madarchod
  • asswipe
  • fick
  • kock
  • kocks
  • kunt
  • kunts
  • kunts
  • s3x
Here is a list of known words and phrases to be randomly censored, reported by users:
  • a
  • All
  • alright
  • and
  • are
  • bed
  • Black
  • bullying
  • cake
  • censored
  • chicken
  • city
  • daddy
  • don't
  • dont
  • Facebook
  • gold
  • headphone
  • home
  • i
  • ik
  • jump
  • k
  • kill
  • like
  • lol
  • me
  • NapkinNate
  • Nate
  • numbers
  • off
  • or
  • phone
  • playing
  • poop
  • Reddit
  • ROBLOX
  • Snapchat
  • this
  • Twitter
  • usernames
  • White
  • you
  • He/He's
  • Numbers

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