Carell, who also produced the film, previously told Entertainment Tonight that he was initially hesitant about the title chosen by Warner Bros.
"I never liked that title," he said. "I do now, but when [screenplay writer] Dan Fogelman wrote it, he didn't title it.
He didn't call it anything. It was 'Untitled Dan Fogelman Project.'"
The studio eventually settled on Crazy, Stupid, Love, and Carell admitted he wasn't thrilled at first.
"So finally, Warner Brothers just said, 'We're calling it Crazy, Stupid, Love,' I was like, 'Eh, alright,'" he said.
He noted that audience reception proved the title worked.
"But I'm convinced that if it's good and people like it, people will like the title. Doesn't even matter what you call it," he said.
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Produced on a $50 million budget, the film grossed $145.1 million worldwide after its 2011 release.
