noun (used with a singular or plural verb) Informal.
a person or thing of little significance, importance, or value: His salary was small potatoes for an executive of his ability.
Yams Vs. Sweet Potatoes: What’s The Difference?If you're not arguing about politics or whether or not it's time for Grandma to get some more grandchildren, there's one topic that's always guaranteed to make a splash at the Thanksgiving dinner table: Are those yams or sweet potatoes in your holiday casserole?
Origin of small potatoes
First recorded in 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for small potatoes
noun (functioning as singular or plural)
informal, mainly US and Canadian someone or something of little significance or value, esp a small amount of money
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012