How do you spell Ninety?
Correct spelling
ninety
NINE + TY. Keep the E from nine.
Why is ninety spelled this way?
NINE + TY. Unlike forty (which drops the U from four), ninety keeps the E from nine. The inconsistency between forty and ninety is genuinely baffling.
Common misspellings of ninety
nintyninteenninetyniney
Example
My grandmother is ninety years old.