In "The Importance of Being Earnest," Cecily is completely infatuated with the name "Ernest," believing it to be the epitome of a charming and desirable man; she has a romantic fantasy built around a man named Ernest, even going so far as to imagine a relationship with Jack's fictional brother "Ernest" despite not knowing him personally, solely because of the name itself.
Romantic ideal:
She sees the name "Ernest" as a symbol of a man with good character, charm, and a slightly rebellious streak.
Fantasy fixation:
Cecily has built an entire imaginary romance in her diary with a man named Ernest, even going as far as to pretend to be engaged to him.
Obsessive nature:
Her obsession with the name is highlighted by her immediate attraction to Algernon when she discovers he is "Ernest" in disguise.