Behind the times
The idiom “Behind the times” is used to describe someone or something that is old-fashioned, outdated, or not keeping up with current trends or developments. It suggests that the person or thing is not modern or up-to-date with the latest information, technology, or ideas. When someone is described as being behind the times, it means they are not aware of or adapting to the changes happening around them. This could refer to someone who still uses outdated methods, holds traditional beliefs that are no longer widely accepted, or simply doesn’t keep up with the latest trends in fashion, technology, or culture.
For example, if someone is still using a flip phone in a world where smartphones are the norm, you could say they are behind the times. Similarly, if a company is not utilizing social media for marketing in today’s digital age, they could be considered behind the times in terms of their marketing strategy.