generation gap

WordReference Random House Learner's Dictionary of American English © 2025

gen•erˈa•tion ˌgap, n. [uncountable]

1. Sociology a lack of communication between one generation and another, esp. between young people and their parents.

WordReference Random House Unabridged Dictionary of American English © 2025

genera′tion gap′, 

1. Sociology a lack of communication between one generation and another, esp. between young people and their parents, brought about by differences of tastes, values, outlook, etc.

• 1965–70

Collins Concise English Dictionary © HarperCollins Publishers::

generation gap noun

1. the years separating one generation from the generation that precedes or follows it, esp when regarded as representing the difference in outlook and the lack of understanding between them