...to wish that 3 particular words would vanish from mumsnet forever.

[BertrandRussell]

They only ever seem to be used to diminish and try to shut down discussion. To deflect from somebody's argument without addressing it, and to try to make the other person look irrational and/or mean spirited, or to characterise their point as an overreaction, however moderately it's been been put. They are the polemical equivalent of playing the player not the ball.

The words are froth/frothing/frothers, sneer/sneery/sneering and hate/haters.

Will Nyone join me in. Moratorium?

Can we include HTH
Usually used in a passive aggressive way by a prat

I would add 'entitled' to that list.

Agree, and would also include "sanctimonious", which crops up reliably on certain threads and is particularly unpleasant, with its undertones of assumed superiority and piety. Agree that we should address the argument, not the arguer, and keep emotive words to a minimum.

I still don't understand what HTH means.
The word vacuous, it is so sneery

I agree with frothing. Not so bothered about the others.

My least favourite words/phrases on mn:
judgy pants
cunt
DH
ODFOF
Fuck off to the far side of fuck and when you get there fuck off some more
hands OP a grip
pearl clutching
chavvy
scroungers

ODFOD*

Naice :D

I actually think "entitled" has been used so often on MN that it's become almost meaningless.

'Menz' needs to go too.

As soon as someone types it, I immediately stop reading their post and scroll straight to the next one.

"Special snowflake"

Fuck off.

The most ridiculous put-down I've ever heard

It's reminiscent of playground bullies trying ever so hard to be cool.

I'm not keen on narcisstic. Vastly overused, normally inaccurately.

I don't even like it when it's spelt correctly!

Can we ban the word 'vile' too?

I hate special snowflake too. Sounds like it's moving anyone who might not want to do EXACTLY what everyone else does.

Also, teachers, with you're taking about any given student PLEASE for the love of Marjorie can you use some other name than 'little Jonny'. Nobody is called Jonnyb any more. You sound like Joyce Grenfell, only not funny.

oh yes, definitely naice and menz too. Special snowflake, I quite like.

PO please
and PC usually used to put down the sn community

Now I'm going to flounce (se what I did there)?

You're supposed to be talking about my words, not adding yours!

What does special snowflake mean, I've not seen that one used?

Yes to 'entitled'.
Also 'grabby'. And 'brat'.

'Give your head a wobble' is vile (sorry, liptolinford !)

"YABU. You sound entitled and grabby and your child is a brat. Give your head a wobble."

explodes

I'd like at least a months ban on, controlling, grabby and entitled.

I'd like a lifetime ban on "Sociopath", no they really aren't and says much more about the poster than the person they are labelling.

I quite like Give your head a wobble.

I really dislike all the / do you want me to get a grip from the grip shop/do you need a spare grip I have one here somewhere and all other unfunny grip related 'jokes'.

Oh and TOXIC needs to go!

"My family are toxic"

I always picture them sitting down to dinner, wearing radio active suits.

Haven't got a problems with any of the words in the OP. Maybe get rid of the frothers/sneerers/haters and the words will disappear?