unhip
🇺🇸
/ˌʌnˈhɪp/
🇬🇧
/ˌʌnˈhɪp/
not fashionable or aware of what is popular
My grandfather is unhip; he doesn't know about the latest music trends.
我祖父不时髦;他对最新的音乐潮流一无所知。