stick-in-the-mud

[ stik-in-thuh-muhd ]
/ ˈstɪk ɪn ðəˌmʌd /

noun

someone who avoids new activities, ideas, or attitudes; old fogy.

Origin of stick-in-the-mud

First recorded in 1725–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for stick in the mud

stick-in-the-mud

noun

informal a staid or predictably conservative person who lacks initiative or imagination
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