Jim DeRogatis of the "Chicago Sun-Times" wrote that "Irreplaceable" resembles ballads sung by Whitney Houston. Spence D. of IGN wrote that the song was inspired by Aretha Franklin's work since "Irreplaceable" consists of several variations in gutturals and octave range. The lyrics of "Irreplaceable" concern the breakdown of a woman's relationship with her boyfriend after she discovers his infidelity, and the song "sounds a lot like a statement of independence". Sarah Rodman of "The Boston Globe" wrote, "With a heretofore unknown grasp of nuance, Beyonce combines heartache, bravado, and anger as she tells a cad he's far from irreplaceable—and that, in fact, her new man will be arriving momentarily." Hermansen said that "Irreplaceable" is a song that "people from all walks of life can enjoy". Beyoncé said that the song is "a little honest", and, "... basically we can't forget our power and our worth. And sometimes you're so in love, you forget that. And sometimes you feel like you're not being appreciated. And sometimes they forget that they can be replaced."