go out of fashion
Also, go out of style. See under go out, def. 5.
Words Of The 60s: Far Out!Here’s a look at some words that have endured, and some that are better left in the patchouli-scented dustbin of history.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.