Other forms: unpopularly
When something is unpopular, it means most people don't like it, like a school lunch that nobody wants to eat or a TV show that nobody watches.
Empty theaters and poor reviews indicate that a movie is unpopular. A politician with low approval ratings is unpopular and probably won't be reelected. Unpopular opinions are those that are not widely accepted or well-received. The word unpopular indicates a lack of favor or acceptance that can lead to rejection of products, ideas, and sometimes even people.