Jay-Z has said Kanye's West's outburst at the MTV Video Music Awards was “inappropriate at the time”.
West has faced criticism from musicians and President Barack Obama for grabbing the microphone from Swift during her acceptance speech.
The rapper was upset that Swift had won the prize for Best Female Video over Jay-Z's wife Beyonce.
Speaking on Radio 1, Jay-Z acknowledged that West's reaction was “rude” but said it wasn't worthy of such a public backlash.
"He's just a super-passionate person. Of course it was rude because it was her moment but that's the way he really felt,” Jay-Z said.
"It's really an awards show and I think it's a bit of a blow out, but of course it was rude.
"I think it was rude but the way they're treating him... He's on the cover of every paper. He didn't kill anybody. No one got harmed."
Jay-Z performed live on Radio 1 this morning as part of DJ Jo Whiley's Live Lounge tour.
The rapper wowed fans at Camden Roundhouse in London last night (September 17) and is due to support Coldplay at Wembley Stadium tonigh and tomorrow.
Jay-Z at Camden Roundhouse
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.

Deaf Havana Unveil 'Leeches' Video - Watch
Placebo Announce Two UK Shows - Tickets
Dizzee Rascal Announced As Support For Red Hot Chili Peppers Knebworth Show
Chris Brown Hints At Secret Relationship With Rihanna
Jay-Z, Beyonce, Lady Gaga Named Most Powerful People In Music
The Top-Ten Biggest Music Feuds
Happy 67th Birthday Bob Marley: His Most Loved Songs
The Greatest Rock Acts Of The 90s Revealed!
Madonna Performs At Super Bowl Sunday: Pictures