Ned Beatty, who in the course of a prolific performing job that spanned much more than four decades, gained an Oscar nomination for his purpose in “Network” and gave a memorably harrowing overall performance as a weekend outdoorsman assaulted by backwoods brutes in “Deliverance,” died on Sunday at his property in Los Angeles. He was 83.

His demise was verified by Deborah Miller, his supervisor, who did not specify the trigger.

The beefy Mr. Beatty was not regarded as a foremost gentleman. In more than 150 films and tv initiatives starting in 1972, he was virtually constantly solid in supporting roles. But he was closely linked with some of Hollywood’s most enduring movies.

His movie credits also involve “All the President’s Men” (1976), “Superman” (1978) and its initially sequel, the inspirational sporting activities drama “Rudy” (1993) and the Rodney Dangerfield comedy “Back to School” (1986).

He was a familiar confront on tv as well. He played Stanley Bolander, the detective regarded as “Big Gentleman,” on the collection “Homicide: Existence on the Street,” from 1993 to 1995. He was also noticed in numerous episodes of “Roseanne,” Roseanne Barr’s hit sitcom, as Ed Conner, the jovial father of John Goodman’s character, Dan, and in episodes of “Law & Purchase,” “The Rockford Files” and other exhibits.

In 1976, Mr. Beatty was forged by the director Sidney Lumet and the screenwriter Paddy Chayefsky in “Network,” the critically acclaimed satire about a television network’s wrestle for rankings in a tube-obsessed nation. His character, the mustachioed community govt Arthur Jensen, gave a unforgettable monologue, which gained Mr. Beatty an Academy Award nomination for greatest supporting actor.

In the scene, Mr. Beatty’s character summons Howard Beale (Peter Finch), the unstable anchorman who has just experienced an on-air meltdown, into the company boardroom and attracts the curtains. With the digital camera educated on Mr. Beatty, who is standing at the opposite conclude of a meeting desk lined with banker lamps, he unleashes a ferocious soliloquy. Mr. Beale has a ton to learn about the strategies of the corporate entire world, he sermonizes.

“You have meddled with the primal forces of mother nature, Mr. Beale,” Mr. Beatty says, his voice roaring. “And you will atone.”

Mr. Beatty then modulates his shipping and delivery and asks, in a typical speaking voice, “Am I obtaining by way of to you?”

In the e-book “Mad as Hell: The Generating of ‘Network’ and the Fateful Eyesight of the Angriest Guy in Movies” (2014), written by Dave Itzkoff, a tradition reporter for The New York Occasions, Mr. Beatty is quoted as expressing that he experienced been intimidated by the size of the speech, but energized by the character and the film.

To get the filmmakers to commit to giving him the part, Mr. Beatty reported, he informed them that he experienced another motion picture offer you for extra money.

“I was lying like a snake,” he additional. “I consider they preferred the simple fact that I was at least attempting to be sly. I was accomplishing one thing that probably could be in their lexicon.”

Mr. Beatty produced his movie debut in “Deliverance,” the 1972 adaptation of James Dickey’s novel about four mates whose canoeing excursion in rural Ga turns calamitous. Stripped down to white underpants, his character, Bobby, is compelled to “squeal like a pig” by a hillbilly prior to he is raped.

The line would go down in motion picture infamy.

“‘Squeal like a pig.’ How several situations has that been shouted, said or whispered to me, due to the fact then?” Mr. Beatty wrote in a 1989 impression piece for The New York Times with the provocative headline “Suppose Gentlemen Feared Rape.”

Mr. Beatty did not length himself from the scene.

“I suppose when another person (invariably a male) shouts this at me I am supposed to duck my head and glimpse embarrassed at currently being regarded as the actor who suffered this ignominy,” he wrote. “But I experience only delight about remaining a portion of this story, which the director John Boorman turned into a film typical. I feel Invoice McKinney (who portrayed the attacker) and I performed the ‘rape’ scene about as properly as it could be performed.”

Ned Thomas Beatty was born on July 6, 1937, in Louisville, Ky., to Charles and Margaret (Lennis) Beatty. He attended Transylvania College in Lexington, Ky., on a music scholarship just before starting his acting occupation,

He expended much of the early portion of that profession in regional theater, including 8 a long time at Arena Phase in Washington. In a 2003 interview, he advised The Periods that he appeared in an normal of 13 to 15 exhibits a yr at the commence of his career and put in as many as 300 days undertaking.

Mr. Beatty’s survivors include his fourth wife, Sandra Johnson. Full data on survivors was not immediately out there.

Mr. Beatty performed Large Daddy, the plantation-operator patriarch of a troubled Southern family, in the 2003 Broadway revival of Tennessee Williams’s “Cat on a Hot Tin Roof,” which also starred Jason Patric and Ashley Judd. He had earlier played the exact job in the revival’s London creation, for which he was nominated for an Olivier Award.

Candidly examining his co-stars, Mr. Beatty said that Broadway had appear to count also closely on stars, thrusting them into hard roles they did not have the acting chops to manage.

“In theater you want to go from right here to there, you want it to be about something,” he mentioned. “Stage actors master how to do that. Film actors usually really don’t even think about it. They do what the director desires them to do, and they by no means tell their functionality with — phone it what you wish — by means of-line, objective.”

While Mr. Beatty was most effective recognized as a spectacular actor, he also gave noteworthy performances in many comedic roles.

In “Superman” (1978), he performed Otis, the bumbling toady of the villainous Lex Luthor (Gene Hackman), who participates in Luthor’s interception of nuclear warheads but is most noteworthy for his comic cluelessness. He reprised the position in “Superman II” two years later on.

In 1986, he held his very own opposite Rodney Dangerfield as the gushing and unscrupulous Dean Martin of the fictional Grand Lakes College in “Back to School.” When he features admission to Thornton Melon (Mr. Dangerfield), the proprietor of a chain of major-and-tall apparel stores, in trade for the donation of a constructing, the head of the enterprise school objects to the quid professional quo.

“But I’d just like to say, in all fairness to Mr. Melon listed here,” Mr. Beatty’s character responds, “it was a really significant test.”

Mr. Beatty performed a lot of other compact but significant roles, such as the voice of Lotso, a teddy bear who turns evil, in “Toy Tale 3” (2010). In “Rudy,” the 1993 motion picture about a University of Notre Dame walk-on football player who would make the workforce, he performed the modest but significant job of Daniel Ruettiger, the title character’s blue-collar father. As he enters the stadium for the to start with time, he is defeat by the moment.

“This,” he suggests, “is the most lovely sight these eyes have at any time found.”

Jordan Allen contributed reporting.