It was released by Darkroom and Interscope Records for digital download and streaming on March 30, 2017, as the lead single from the soundtrack.

A mid-tempo pop ballad, the song's lyrics see Eilish sing about finally discovering her former lover's mistakes.

In it, Eilish is shown dressed in a blue tracksuit with matching high-top Nikes while hanging off a ladder that seemingly goes on forever into endless white space.

[3][4][5] According to the sheet music published at Musicnotes.com, "Bored" is composed in the key of G major and has a tempo of 122 beats per minute (BPM).

[7][8] Lyrically, "Bored" is a song built on harmonies that demonstrates Eilish feeling contempt for an ex-lover who had made too many mistakes: "I'm not afraid anymore/What makes you sure you're all I need?

The staff of NME stated that the song is "salvaged by the layer-upon-layer of vocal takes that come to a head towards the end", and said it "belongs to a now-bygone Eilish sonic era".

[9] Angie Piccirillo of Consequence of Sound commented that Eilish's "smooth vocals caught the attention of young listeners".

Emma Blanchard, writing for V magazine, praised the visual, saying: "Eilish's genuinely thoughtful lyrics and gorgeous piano melodies align flawlessly with the videos minimalistic vibe."