Swearing in your nation

[Johto and Kanto]

There isn't really swearing in the Imperial language, but there are words with disrespectful or offensive connotations that are frowned upon. Sometimes English swear words are used, but this is rare.

[Tripartite Empire]

Fucking A, it's a goddamn planet of fucking sailors on our shithole of a fucking homeworld. Of course, those cockbag offworlders think we're inbred retards too busy fucking our wildlife and our cousins to- [TRANSMISSION HALTED]

This message brought to you by the Department of Cultural Exchange, where the password is fuck you, fuck me, and fuck off.

This man needs a medal.

[New haven america]

Formal conversation: Frowned on
Informal conversation: Completely fine
TV: Any cuss word will not be censored between the hours between 7:00 pm and 6:30 am, any other time they will be censored.

[Tripartite Empire]

In our empire, we really don't care.

Swear words are practically part of the language when directed at someone of equal rank.

[Nekronia]

People don't swear particularly often or rarely, as it's not a taboo. Not even the teens swear because it's not viewed as an "adult" thing, it's just words. There are some bad insults, of course, but they aren't swear words.

Swearing itself is not illegal, but could harassment or other laws might be broken in some contexts and intents which would warrant punishment.

Fucking A, it's a goddamn planet of fucking sailors on our shithole of a fucking homeworld. Of course, those cockbag offworlders think we're inbred retards too busy fucking our wildlife and our cousins to- [TRANSMISSION HALTED]

This message brought to you by the Department of Cultural Exchange, where the password is fuck you, fuck me, and fuck off.

This man needs a medal.

This^

[Lydenburg]

Swearing in public at your servant/children/significant other is legal.
Searing in the army at your troops is encouraged.
Swearing at either the army or the police when in civvies is asking for it.

[Communal Ecotopia]

Some swearing may be taboo, especially under certain circumstances, but that's none of my government's business.

[Harpers Ferry]

Swearing is illegal.

How you enforce this, the charges, and the court cases dealing with this, not to mention how you determine the sentences for these "criminals" has got to be hilarious.
And of course it is legal. They're words.

[Kingdom of Derita]

Swear words are completely illegal in the sense of common curse words such as f-word, b-word etc, are considered ugly and incompetent of a inorganic child. The closest swear like word is Blast.

[Ashyaria]

Things like "fuck you" or "go fuck yourself" or "you piece of shit" are considered profane and are used to attack someone.

Aside, swearing is considered a somewhat avoided thing, but it is seen as more of a norm in society.

[Novus Niciae]

We swear all the time, But if we swear at someone it will be 100% accurate, we don't slander.

[Tyrandel]

Words like fuck, cunt, dick and so on are quite commonly used. However, we are not content with the swears of common English. We had to mix and match them to make our own. A lack of religion means that they are almost all sexually explicit.
A few examples, organized from least to most offensive.

Slitfucker: Roughly equivalent in meaning to sodomite. Refers a male dragon (or other reptilian species) putting their penis inside someone else's genital slit, specifically another male's. Not really insulting, mostly used in dirty talk.

Monodick: Used to imply that a dragon has only one penis, rather than the normal two. This implies inferiority, weirdness and a lack of virility. Not extremely offensive, but still quite rude.

Shitscales: A piece of rare non-sexual Tyrandelian profanity, this one refers to a dragon that is dirty and does not properly clean themselves. It implies a lack of control, childishness and general uncleanliness.

You thrice-abominated whore's bastard: Similar to 'you son of a bitch', but so much more entertaining to say. Somewhat offensive, but also so long-winded that it is sometimes funny.

Wyrmslut: Refers to an individual willing to have sex with a Wyrm in exchange for magical power. Wyrms are highly aggressive, sadistic, and have corrosive bodily fluids (including sexual fluids). This one is legitimately offensive and using it to refer to someone will probably be unacceptable outside all but the most kinky roleplay or crudest jokes.

[Galactic Terran Empire]

Tourette's Guy is really popular in our nation.

There is a 20 ft tall statue of Tourretes Guy in our capital...

[Gradea]

Legal

[New Apperon]

You're practically expected to swear at least once per sentence. But we just see swear words as any others. Racial, homophobic, or religiously radical words are frowned upon.

[Savoda]

Agglutinative. Very agglutinative.

[Melvonia]

Even the Ducal Cabinet Council lists Fucked-Up Friday as part of its standing agenda. In general, simple knee-jerk reactive swearing is frowned upon, but creative and original obscenities are rightly admired as displays of considerable verbal dexterity.

The Doge's personal favourite swear du jour is "fucketybuckets!" The Finance Minister is still tenaciously clinging to last season's popular "dickwhistle".

[Blakullar]

Swearing is quite acceptable in informal settings, and under special circumstances, in formal ones all the way up to the leader's speeches to the nation. These "special circumstances" almost always involve a state of open, hot warfare against an enemy, but they also apply to past foes that are especially despised.

Essentially, this.

The only discourse that enemies of Mechanocratic Russia are worthy of is in the language of violence, and it isn't an uncommon sight to see, for example, a Frenkish tourist be heckled on the street with a barrage of slurs that would cause the old-world political correctness brigade to go stark-raving crazy with rage.

[Smig]

They're just considered normal words here, other than offensive ones.

[Ragnarum]

They are a vital part of our dialect and general accent.

[Tolmakia]

Swearing is permissible. However swearing is not taken lightly by most people.

[Meadows]

Swearin is pretty fuckin' popular, to say the least

[Davao and Mati]

It depends on situation but if the swear is directed towards gender orientation, race, skin colour and etc he/she may face a charge of Lese Majeste

[Dei Terrare]

Tourette's Guy is really popular in our nation.

There is a 20 ft tall statue of Tourretes Guy in our capital...

LAST I GAVE A SHIT, I GOT FUCKED!

[Arvenia]

Swearing is very rear in Arvenia, but racist words, offending words and threatful words are illegal!