"Lost for Words" is a song recorded by English rock band Pink Floyd, written by guitarist and lead singer David Gilmour and his spouse Polly Samson for the band's fourteenth studio album, The Division Bell. It appears as the penultimate track on the album. The lyrics, mostly penned by Samson, are a bitterly sarcastic reflection on Gilmour's then-strained relationship with former bandmate Roger Waters. The song was released to US rock radio the week of the album's release, succeeding "Keep Talking", the previous promotional release, released the week before. The song reached #53 in the Canadian singles chart.

The second-to-last line, "But they tell me to please go fuck myself", is just the fifth instance of the word "fuck" being used in a Pink Floyd lyric within the band's official discography and, indeed, just the eighth instance of a Pink Floyd lyric using any profanity at all (the other ones being "I've got thirteen channels of shit on the TV to choose from" in "Nobody Home" from their 1979 album The Wall, "You little shit" in "The Trial", also from The Wall, "Oh don't talk with me/Please just fuck with me" in "Candy and a Currant Bun", the B-side to Pink Floyd's first single, "Arnold Layne", "You fucked up old hag" in "Pigs (Three Different Ones)", a song from the 1977 album Animals, "Don't give me that do goody good bullshit" in "Money", a song on the 1973 album The Dark Side of the Moon, "Speak to Me" (the opening track on Dark Side) has the phrase "I've been mad for fucking years" and the repeated line "Fuck all that" in "Not Now John", from 1983's The Final Cut).

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