cromulent
Acceptable, satisfactory, or valid.
Ms. Hoover: I don't know why; it's a perfectly cromulent word. […] Principal Skinner: He's embiggened that role with his cromulent performance.
Mrs. Krabappel: "Embiggens"? I never heard that word before moving to Springfield.
Where it comes from
A humorous, intentionally morphologically opaque neologism and nonce word coined by American television writer David X. Cohen for “Lisa the Iconoclast”, a 1996 episode of the animated sitcom The Simpsons. The ending resembles corpulent, temulent and other Latinate adjectives (derived from -ulentus (“full of, abounding in”)).
Adapted from the Wiktionary entry cromulent (CC BY-SA 4.0).