The Minnesota Timberwolves have joined Anthony Edwards in apologising for a video the former first overall pick posted in which he made a homophobic slur.

Edwards posted a video to his Instagram story on which he could be heard passing comment on a group of men gathered near the car he was sat in.

The offensive clip prompted a backlash on social media, and Edwards apologised on Sunday.

"What I said was immature, hurtful and disrespectful, and I'm incredibly sorry," he wrote on his Twitter page.

"It's unacceptable for me or anyone to use that language in such a hurtful way, there's no excuse for it, at all. I was raised better than that!"

The Timberwolves released a statement on Monday, attributed to president of basketball operations Tim Connelly.

"We are disappointed in the language and actions Anthony Edwards displayed on social media," it read.

"The Timberwolves are committed to being an inclusive and welcoming organisation for all and apologise for the offense this has caused to so many."