When pressed by DeGeneres and Stefani if he would be "reproducing soon," Shelton paused and fidgeted in his seat before answering, "I mean... no."
Levine was more forthcoming about his relationship with Behati Prinsloo. The 35-year-old Maroon 5 frontman and 25-year-old model married in July, and Levine said he can't get enough of the word "wife."
Shelton and wife Miranda Lambert have been together since 2006, and married in May 2011.
"The Voice" returns to NBC on September 22, and the singer will release his ninth studio album, Bringing Back the Sunshine, on September 30.
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