nonentity

US /ˌnɑːˈnen.t̬ə.t̬i/

UK /ˌnɑːˈnen.t̬ə.t̬i/

sự vô thực

a person without strong character, ideas, or influence:

•

She was once a political nonentity, but has since won a formidable reputation as a determined campaigner.