Express in English

Never Ever

Never is a contraction of 'not ever'.

Ever means 'at any time'. It is an adverb which you use to add emphasis in negative sentences, commands, questions, and conditional structures.

I haven't ever been to a discotheque before. = I have never been to a discotheque before. ( use 'ever' in negative sentences with 'not')

She barely ever replies to my emails = She never replies to my emails (adding emphasis to negatives)

Don't you ever touch it. (command)

Have you ever been to Agra? (use 'ever' for questions)

Doesn't he ever help? = Does he not ever help? ('not ever' for negative questions)

She was trying harder than ever. (comparitives)

If you ever go to Paris, drop me a postcard. (conditional)

Sometimes 'ever' can mean 'always'.
He's as kind as ever.
I will love you for ever and ever.
The prince and princess lived happily ever after.

We use 'never ever' to make the meaning of 'never' stronger.

I'll never ever come here again!

Euphemism

A euphemism is a generally innocuous word or expression used in place of one that may be found offensive or suggest something unpleasant.
People use euphemisms to protect themselves and others from the harsh realities of life. Thus we use, senior citizen for old person, passed away for the dead etc.
Euphemisms often deal with profanity, body parts, bodily functions, s*x, death, murder, societal taboos, superstitions, or other issues that may not be considered fit for polite conversation or writing.

Some instances...
little thin on top - losing his hair

between jobs - unemployed

cognitively challenged - stupid

didn't make it -has died

differently abled - disabled/handicapped

kicked the bucket/departed - has died

letting you go - you're fired

lost his marbles - mad

over the hill - too old to function effectively

preowned - used ( a favorite with second hand car dealers)

collateral damage - in a bombing, civilian casualties and destruction (a Hollywood patent)

out‐source - send work to workers outside of the organization (a corporate priority)

perspiration - sweat

W.C./rest room - toilet

special child - disabled or learning challenged

affirmative action - a preference for minorities or the historically disadvantaged, usually in employment or academic admissions('reservation' in India)