The phrase "as a catchphrase" is correct and usable in written English.
It can be used when referring to a phrase or expression that is popular or widely recognized, often used to convey a particular idea or sentiment.
Example: "The slogan was adopted as a catchphrase to promote the new campaign, resonating with audiences everywhere."
Alternatives: "as a slogan" or "as a tagline".
It was quickly taken up as a catchphrase.
The man who invented garlic bread (as a catchphrase) will be hoping to improve on Horne and Corden's showing last year.
"How old is your rat?" – as Turnbull ventured of a mall-going rodent named Splinter on Monday – will surely go down as a catchphrase of this campaign.
"Everybody into the pool!" will no longer work so well as a catchphrase for the New Museum's career survey of the adventurous work of the Belgium-born artist Carsten Holler, which opened last week.
(b) Schwarzenegger explained to Bush that "Bring 'em on!" didn't really work as a catchphrase, because it was inappropriate for a leader to invite an attack on his own troops.
Her line, "an infinite lifespan with a finite memory makes for an awkward social life", is now almost up there as a catchphrase on a par with River's "Spoilers" and "Hello Sweetie".
It is as ingrained a catchphrase for city police officers as "New York's Finest".
The program's host, Jimmy Hill, often referred to a footballer's playing as "tasty", a catchphrase that Starr incorporated into his song lyrics: Commentators have interpreted the song, and particularly this statement, as an attack by Starr on his former Beatles bandmate Paul McCartney.
It may be a rhyme or "jingle", or a catchphrase, as well as the speaker's accent, tone and speed, that will entice you most to want to buy their product, remember their firm when you need equipment service or repairs or even to elect their politician.
What Mr. de Rothschild turned it into was the Plastiki, a complicated project he describes as "Planet 2.0" — a catchphrase for evolving environmental strategies — that has suffered a few Planet 1.0 hiccups.
That line, delivered as something of a catchphrase in the 35-year-old New Zealander's distinctive, slightly nasal intonation, would surely be the giveaway to anyone who has caught his turn as the well-meaning but inept band manager Murray Hewitt on cult HBO comedy Flight of the Conchords (shown here on BBC4).
