ignorant
UK: ˈɪɡnərənt | US: ˈɪɡnərənt
adj. lacking knowledge or awareness in general
adj. uninformed about a specific subject
adj. discourteous or rude due to disregard for others
The word "ignorant" traces back to Latin ignorantem, the present participle of ignorare ("to not know"). The root gnarus ("knowing") is also seen in "ignore" and "agnostic." Over time, "ignorant" evolved from simply denoting a lack of knowledge to sometimes implying willful disregard or rudeness, reflecting societal views on awareness and manners.
He was ignorant of the basic rules of the game.
Her ignorant remarks offended everyone in the room.
Many people are ignorant about climate change science.
It’s frustrating to argue with someone who is willfully ignorant.
The teacher patiently corrected the student’s ignorant assumption.