The phrase "discreet life" is correct and can be used in written English.
It means living in a reserved and subtle manner, avoiding attention or gossip. Example: She lived a discreet life, away from the spotlight of her wealthy family, quietly pursuing her passion for painting.
A team of computer animators, led by Kara Vallow, bring the paintings to discreet, sensitive life, as they may well have appeared to Darger in his intense imaginings.
He has been generally discreet about his life and family.
But another quieter, more discreet side to life on the Riviera also exists here among the bling.
Italo Calvino was discreet about his life and the lives of others, and skeptical about the uses of biography.
Three weeks after Kathy T. Nguyen, a hospital worker who lived in the Bronx, died of inhalation anthrax, investigators have excavated her discreet and simple life, turning up briefly provocative coincidences and evidence of curious habits.
Each time her status ("divorced") was mentioned in a certain tone of voice, one wondered if things had changed all that much since a pre-1914 French book of etiquette advised, "The divorced woman removes her wedding ring, she resumes her maiden name, and she tries to live a discreet and retired life".
She has also worked with Tracey Ullman in the HBO sketch comedy series Tracey Takes On.... Kavner leads a private, "nearly reclusive" life, "discreet and guarded beyond the usual reticent star routine".
My father was, of course, far more experienced, having been in the Pacific Theater during World War II; far less discreet about his former life (and life in general) he told his daughters inappropriate tales of the women he had met on shore leave.
Discreet about his private life, Paolozzi was attractive to women.
Mr. Carson, she said, was mostly discreet about his romantic life.
