The phrase "greatest fears" is correct and usable in written English.
You can use it to refer to a person's biggest worries or anxieties. For example, "His greatest fear was of public speaking."
This could justify conservative Republicans' greatest fears.
It played on their greatest fears".
Judge Blunk has now, sadly, confirmed our greatest fears.
Growing up suspecting I was gay, one of my greatest fears was to end up alone.
It's about our most cherished dreams and often our greatest fears.
A couture bridal store!" This raises one of her greatest fears: the Manhattanization of her borough.
"One of his greatest fears was the presence of the D.E.A.," Fernando Molina told me.
In a recent survey we asked clients what their greatest fears were.
Disengagement triggers shame and our greatest fears – the fears of being abandoned, unworthy and unloveable.
Limbaugh's characterizations illuminated some of their greatest fears about prejudice and fairness in pro football.
BEIJING — The Beijing Games end Sunday with the greatest fears avoided and the greatest hopes unrealized.
