Never means not once, at no time at all. 'I have never been to Japan.' 'He never eats breakfast.'
Where it sits in the sentence is fixed: never goes before the main verb but after be and after any helper — she never calls, he is never late, I have never seen it. One negative is enough, so 'I never saw nothing' is not standard English. Between never and always sits hardly ever, for the things that happen once in a blue moon. Never carries real weight in short replies: never again, never mind, never say never. And 'well, I never' is old-fashioned surprise, said with the eyebrows up.
1adverbneverAt no time; not once.~98%
“She has never once been late for a shift.”
2adverbstatementNot at all, used to make a statement stronger.~2%
“He never even said thank you.”
Shares are an estimate: a language model read 27 sentences found in the wild and placed 27 of them on a sense — a count of our sample, not a measurement of English.
Never is Old English nǣfre, and that is simply ne, 'not', glued to ever. A thousand years ago you said not-ever as two words; they fused, wore down through Middle English nevere, and English has kept them welded together ever since.
Middle English
nevere
English, today
never
From Middle English nevere. From Middle English nevere, navere, nævere, from Old English nǣfre (“never”), equivalent to ne + ever.
Etymology from Wiktionary, CC BY-SA