Learner's definition of POPULAR
[more popular; most popular]
1 a : liked or enjoyed by many people
— often + with or among b : accepted, followed, used, or done by many people
They have names that were popular a century ago.
He is a popular guy in school.
a popular actor
Spicy foods have become increasingly popular.
This is our most popular [=best-selling] brand of sneaker.
That is a very popular misconception.
The word “groovy” was popular in the 1960s but it's outdated now.
Her theories are popular among social scientists.
Contrary to popular belief/opinion [=in spite of what many people believe], fame does have its drawbacks.
2 always used before a noun : of, relating to, or coming from most of the people in a country, society, or group
the popular vote
— see also popular demand at 1demand
3 always used before a noun, somewhat formal : designed or intended for the average person: capable of being understood by ordinary people