xennialEnglishOxford Dictionary of Englishxennial /ˈzɛniəl , ɛksˈɛniəl / ▸ noun a member of an age group born after Generation X and before the millennial generation (specifically in the late 1970s and early 1980s): xennials grew up in a time where landline phones were used to organize catch-ups with friends. – ORIGIN early 21st century: blend of x (as in Generation X) and millennial.