word-of-mouth

The small restaurant grew primarily through word-of-mouth advertising, as happy customers recommended it to their friends.

작은 식당은 만족한 고객들이 그곳을 친구들에게 추천해주면서 입소문을 타고 주로 성장했습니다.

Word-of-mouth advertising is considered the most effective marketing strategy for new restaurants.