nelly

nelly — noun

1. used in the fixed spoken phrase 'not on your nelly!' to refuse something firmly

1.nounB2
Definition

used in the fixed spoken phrase 'not on your nelly!' to refuse something firmly or to state that something will absolutely not happen.

Example

Ari asked to borrow my car after crashing his own last week, and I said not on your nelly.

fixed expression for emphatic refusal

Not on your nelly would I pay that much for a second-hand phone.

Common collocations
  • not on your nelly
  • say not on your nelly
  • reply not on your nelly
Synonyms
  • no way

    more common internationally, less colourful

  • not a chance

    similar strength but not distinctly British

  • absolutely not

    neutral register, used in any variety of English

Antonyms
  • of course

    polite agreement, opposite end of the refusal scale

  • by all means

    formal permission, contrast with the informal refusal

Grammar Patterns

not on your nelly (fixed phrase)

Usage Note

This expression is always used in the exact fixed form 'not on your nelly' — the word 'nelly' does not appear outside this phrase. It is a colloquial British idiom and would sound odd in formal writing or American English.

Common Mistakes

Not on your nelly I will go there' (missing comma).
Not on your nelly, I will go there.
A comma normally separates the phrase from the following clause.
Not on your nelly, mate, you are not' (redundant repetition).
Not on your nelly, mate.
The phrase already communicates strong refusal; adding extra negation is unnatural.

nelly — adjective

Synonym discussion

Sense: noun/1

All three synonyms express refusal, but they differ in register and colour. 'No way' is the most common informal refusal across all English varieties — it works in casual conversation everywhere. 'Not a chance' is similarly informal but implies the speaker thinks the request is unreasonable or impossible ('Not a chance you can finish that in an hour'). 'Absolutely not' is neutral in register and can be used in both speech and writing, from a parent telling a child ('Absolutely not, you are too young') to a formal statement. 'Not on your nelly' sits at the most colloquial end: it is exclusively British, playful in tone, and signals the speaker's strong personal refusal rather than a judgement of the request itself. Example: 'Would you apologise to him? Not on your nelly!' feels different from 'Would you apologise? No way.' — the nelly version adds a defiant, almost teasing energy.

no waynot a chanceabsolutely not

Common collocations

Nouns

  • not on your nelly (fixed phrase)

Phrases

  • not on your nelly

Etymology

EnglishBritish slangrhyming slang

The noun phrase 'not on your nelly' likely originates from British rhyming slang of the late 19th or early 20th century. The full expression was 'not on your Nelly Duff', where 'Nelly Duff' rhymed with 'puff' — a slang term for 'breath of life'. So 'not on your Nelly Duff' literally meant 'not on your life'. Over time the phrase shortened to 'not on your nelly'. The adjective sense dates from the early 1900s and comes from 'Nelly' used as a female name applied derogatorily to men, but its exact path into slang is less clear. The two meanings are historically unrelated — they share the same word form but developed independently.