[5] Reviewer Mike Haydock of BBC Music praised the album, calling it "a fantastic debut".

[6] Lisa Wright of NME also gave the album a positive review, writing, "The Big Roar is the kind of epic-yet-intimate debut that does exactly what its title makes out in the most tactful of styles; an LP that ultimately delivers on every count on the four years of promise leading up to it".

[2] In another positive review, Clash wrote of the album: "Bolt on an undeniably zealous execution, a set of simple yet well-written songs, add an element of confident adventure via some experimentation and diversity and the rebirth of indie may just have found its leading protagonists".

[7] In a more mixed review, Stuart Berman of Pitchfork criticized the album for being excessive, writing, "There's no denying the Joy Formidable's passion, vigor, and pop smarts; it would just be easier to appreciate those qualities if The Big Roar didn't so often sound like a big blur".

[8] Jason Keller of Now Magazine agreed, writing, "The immediate criticism about this long-in-the-making debut... is that there's too much big, as the title suggests".