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 (môs′băk′, mŏs′-)
1. Informal An extremely conservative or old-fashioned person.
a. An old sluggish fish.
b. An old turtle with a growth of algae on its back.

moss′backed′ adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Zoology) an old turtle, shellfish, etc, that has a growth of algae on its back
2. informal a provincial or conservative person
ˈmossˌbacked adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈmɔsˌbæk, ˈmɒs-)

1. Informal. a person holding very antiquated notions; reactionary.
2. an old turtle.
3. a large and old fish, as a bass.
[1870–75, Amer.]
moss′backed`, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mossback - an extremely old-fashioned conservative
conservative, conservativist - a person who is reluctant to accept changes and new ideas
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. A person who vehemently, often fanatically opposes progress and favors return to a previous condition:
2. An old-fashioned person who is reluctant to change or innovate:
Informal: stick-in-the-mud.
Slang: square.
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
In 2018 Patrick Mullins was chastised for his winning ride on Rathvinden and received a six-day ban for using his whip above the permitted level, while Mossback was fatally injured when falling in the four-mile contest.
The eight-year-old made his debut over fences at Naas in November, finishing second to the useful but ill-fated Mossback.
Mossback, Jury Duty, No Comment and Rathvinden are all on a list of 16 runners in the National Hunt Chase.
All I can say is that he is in great form and has a very good each-way chance." In the National Hunt Chase later that afternoon, Fagan, Jury Duty and Mossback give the trainer another strong hand.
Mossback Volkssport Club: Easy 7-kilometer (4.3-mile) or 10-kilometer (6.2-mile) routes in Eugene, walk on wide paved paths along the Willamette River, past some residential areas, then along improved gravel/bark trails to explore a variety of wildlife at Delta Ponds.
"We have an old mossback Jacksonian who snorts and howls because there is a bathtub in the state house; we are running that old jay for Governor," he wrote.
The self-described "mossback" (someone set in his ways) started writing a book about the Northwest and became a public radio commentator and federal disaster-assistance worker.
A supervisor hired from outside the company would not let Mossback get away with his passive/aggressive, analretentive style.
The board had proposed separate but equal membership for women as a compromise between old-grad Bonesmen-who object to women out of mossback sexism or, more politely, on the theory that their presence would inhibit the lengthy life-history confessions members make--and the younger members, who say exclusion of women is wrong and an anachronism.
Elliott is responsible for the first two horses in the betting in Jury Duty and Mossback. They are due to be ridden by amateur jockeys who have both won the race before for the trainer - Jamie Codd and Lisa O'Neill.
However, a chance is taken on Mossback who held every chance when falling at the last in a three-mile Grade 3 at Naas last month.
Mossback Volkssport Club: Moderate 5-kilometer (3.1-mile) and 10-kilometer (6.2-mile) routes in Toledo, walk along the river's edge and the hills overlooking the Yaquina River and observe the 24-hour operations of the Georgia-Pacific Mill, then check out the Yaquina-Pacific Railroad Historic Museum.