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3. on no account

on no account

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on no account

 and not on any account

for no reason; absolutely not. On no account will I lend you the money. Will I say I'm sorry? Not on any account.

See also: account, on

on no account

Also, not on any account. Under no circumstances, certainly not, as in On no account should you put a metal utensil in the microwave oven, or Dad said we can't go, not on any account. [Mid-1800s]

See also: account, on

on no account

Under no circumstances.

See also: account, on