A phrase used to indicate that the preceding phrase is true, both as it is, and also if you flip the two terms within.

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.

(from Dictionary.com) >> adverb
in reverse order from the way something has been stated; the other way around:

When something is opposite of another thing.

it's a way of saying something but it's flipped

See the other way around