Morrison died at Cedars-Sinai Medical Center in Los Angeles from heart failure after a brief illness, publicist Lori DeWaal told The Associated Press. She was 83.
On the original run of "Will & Grace" from 1999 until 2006, Morrison played Salazar, a maid from El Salvador, becoming part of a cast that won a Screen Actors Guild award for best ensemble in a comedy series.
The character, originally written for a single episode, proved so popular in her interactions with co-star Megan Mullally that she would appear in 68 episodes during the NBC series’ eight seasons.
“Rosario is one of my all-time favorite characters,” Morrison said recently, according to a statement and biography announcing her death. “She reminds me a lot of my own mother, who loved animals and children, but she would not suffer fools. It is very significant to me that we were able to show an older, Hispanic woman who is bright and smart and can hold her own.”