on no account
• under no circumstances.
• "on no account let anyone know we're interested"
Similar:
never,
certainly not,
absolutely not,
definitely not,
not in any event,
by no means,
not under/in any circumstances,
under/in no circumstances,
not for any reason,
not for a moment,
no way,
not on your life,
not in a million years,
not for love or money,
not on your nelly,
