fifties

Etymology

noun

1. plural of fifty

noun

1. The decade of the 1850s, 1950s, etc.
2. The decade of one's life from age 50 through age 59.
3. (temperature, rates, plural only) The range between 50 and 59.
   It can't snow tonight; it's forecast to be in the fifties!

adj

1. From or evoking the 51st through 60th years of a century (chiefly the 1950s).
   Don't bring ambrosia, this isn't a fifties potluck.
   As they inspect the message, "Happy B-day Netta," the bakery clerk places four plastic figures around the edges of the cake. The figures have fifties hairstyles and clothing, and they are in rock 'n roll dancing poses. 2008, Gabriella Gahlia Modan, Turf Wars: Discourse, Diversity, and the Politics of Place, Wiley, page 4