fiftysomething

Meaning

1. numeral An indeterminate value between 50 (inclusive) and 60 (exclusive).
2. noun A person between 50 and 59 years old.

   She was a sprightly fiftysomething.

Similar words

fortysomething sixtysomething seventysomething quinquagenarian ninetysomething fifties quintagenarian semicentenarian quadragenarian fiftieth

Often followed by

woman women