• John Legend, Ryan Reynolds, Steve Harvey and more celebrities paid tribute to Alex Trebek
  • The “Jeopardy!” host died at the age of 80 after a battle with pancreatic cancer 
  • The last episode of “Jeopardy!” with Trebek as the host will air on Dec. 25

Alex Trebek, the longtime host of popular game show “Jeopardy!,” died at the age of 80 on Sunday after a battle with pancreatic cancer. The entertainment industry is mourning his loss, and many celebrities are paying tribute to the iconic TV personality on social media.

News of his death was confirmed by the show’s official Twitter account.

“Jeopardy! is saddened to share that Alex Trebek passed away peacefully at home early this morning, surrounded by family and friends. Thank you, Alex,” the game show tweeted Sunday.

John Legend shared a heartfelt message for the iconic host, revealing that he loved watching “Jeopardy!” as a child.

“I was obsessed with Jeopardy as a nerdy kid growing up in Ohio. I’ve loved and revered Alex Trebek since I can remember. What an iconic career,” Legend wrote on Twitter.

Ryan Reynolds also paid tribute to the late host and revealed that Trebek filmed a cameo for his upcoming movie, “Free Guy.”

“He was so gracious and funny. In addition to being curious, stalwart, generous, reassuring, and of course, Canadian,” Reynolds wrote. “We love you, Alex. And always will.”

Academy Award-winning actress Viola Davis praised Trebek as a “true gentleman” in her tribute for the late TV personality.

“RIP Alex Trebek. A true, true gentleman and courageous hero. May flights of angels sing thee to thy rest,” Davis tweeted.

Trebek’s fellow TV icon Steve Harvey called him the “classiest game show host of all time” and extended his condolences to his entire family.

“My heart is so sad over the passing of the classiest game show host of all time!!! His style was real to me. Condolences to his entire family and fans,” Harvey wrote.

Since “Jeopardy!’s” 1984 debut in syndication, Trebek has hosted more than 8,200 episodes across 37 seasons and set the world record for hosting the most number of episodes of a single game show. He revealed that he was diagnosed with stage 4 pancreatic cancer last year. However, he continued to film the game show until recently.

In a statement to Page Six, the show revealed that the last episode of “Jeopardy!” with Trebek as the host will air on Dec. 25.

Here are some more reactions to Trebek's passing:

Trebek is survived by his wife, Jean, whom he married in 1990, and his three children.

Alex Trebek
Alex Trebek of "Jeopardy!" fame is pictured during a rehearsal for the shows Power Players Week in Washington, D.C., on April 21, 2012. Kris Connor/Getty Images