How is “not a” used?

In Jojo Rabbit (2019), one line is: “"Not a Nazi."”

Which movie is “not a” from?

The clip at the top of this page is from Jojo Rabbit (2019).

Idiom

used for emphasis to mean'no thing or person'

Heard in 985 movies

not a…
used for emphasis to mean'no thing or person'
He didn't speak to me — not one word.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

"Not a Nazi."

Said in 8 films · #1