Etymology

Noun

1. a sexually promiscuous woman.

   She's a slut, but I love her.

2. a man with the above qualities, often a gay man.
   • 2005, Adam & Steve

     Before he met you, he was such a whore. No, I'm sorry! Whores get paid. He was a slut.

3. a prostitute.

   You could hire a slut for a few hours, if you're that desperate.

4. a slovenly, untidy person, usually a woman.
   • 1600 CE: William Shakespeare, As you like it

     Clo. Truly, and to cast away honestie vppon a foule slut, were to put good meate into an vncleane dish. \ Aud. I am not a slut, though I thanke the Goddes I am foule.

   • 1602 CE: William Shakespeare, The Merry Wives of Windsor

     Where fires thou find’st unrak’d, and hearths unswept, \ There pinch the Maids as blew as Bill-berry, \ Our radiant Queene, hates Sluts, and Sluttery.

5. a bold, outspoken woman.
   • 1728 CE: John Gay, Begger’s Opera

     Our Polly is a sad Slut! nor heeds what we have taught her.

6. a female dog.
   • 1852 CE: Susanna Moodie, Roughing it in the Bush

     ‘Bete!’ returned the angry Frenchman, bestowing a savage kick on one of the unoffending pups which was frisking about his feet. The pup yelped; the slut barked and leaped furiously at the offender, and was only kept from biting him by Sam, who could scarcely hold her back for laughing; the captain was uproarious; the offended Frenchman alone maintained a severe and dignified aspect. The dogs were at length dismissed, and peace restored.

7. a maid.
   • 1664 CE: Samuel Pepys, The Diary of Samuel Pepys

     Our little girl Susan is a most admirable slut, and pleases us mightily, doing more service than both the others and deserves wages better.