What does "agender" mean?

Lacking gender (in any sense) entirely.

What is a synonym for "agender"?

Common synonyms include: gender-free.

/eɪˈdʒɛndɚ/ adj

adj ·Rare ·Advanced level

Adjective

1
Lacking gender (in any sense) entirely. not-comparable
"An agender noun includes both the masculine and feminine forms."

"An agender noun includes both the masculine and feminine forms."

c. 2000s, from a- (“not”) + gender.