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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.


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


(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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mossback - an extremely old-fashioned conservative
conservative, conservativist - a person who is reluctant to accept changes and new ideas


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.
References in periodicals archive ?
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.
A supervisor hired from outside the company would not let Mossback get away with his passive/aggressive, analretentive style.
Correction (published June 10, 2015): The Mossback Volkssport Club's scheduled walk along the shore of Clear Lake will be held Sunday.