The Opposite of December... A Season of Separation

The Opposite of December... A Season of Separation is the debut full-length album by American metalcore band Poison the Well. It was released on December 14, 1999. The album was recorded with vocalist Jeffrey Moreira, bassist Alan Landsman, drummer Christopher Hornbrook and guitarists Ryan Primack and Derek Miller. Former vocalists Duane Hosein and Aryeh Lehrer were both invited to provide backing vocals on a song.

In promotion of the album, Poison the Well toured the United States several times between December 1999 and September 2001, including performs internationally in Canada and Belgium. However, the band saw multiple issues, such as multiple failed Canadian tours and Moreira also suffered a pneumothorax on the final leg of the tour. Landsman was also shortly replaced by multiple touring bassists after the release. Despite this, the album sold over 30,000 copies by 2002 and is considered to be influential in the early popularization of metalcore and a landmark album in the genre. The release received numerous reissues on various formats over the years through such record labels as Good Life Recordings, Roadrunner Records, Shock Records and Rise Records. It was digitally remastered in 2012.

In 2020, John Hill of Loudwire included the album in his list of the "Top 25 Metalcore Albums of All Time."