Synonyms of 'catch phrase'
a comedy character with the catch phrase, `You don't want to do that'
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a well-known, frequently used phrase, esp one associated with a particular group, etc
his catchcry, "If it ain't broke, don't fix it"
A motto is a short sentence or phrase that expresses a rule for sensible behaviour, especially a way of behaving in a particular situation.
What is your regiment's motto?
Thesaurus for catch phrase from the Collins English Thesaurus
A catch-phrase is a sentence or phrase which becomes popular or well-known , often because it is frequently used by a famous person.