Simple past tense and past participle of soil.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "soiled" in a sentence
"From her eyes poured two black rivers, down her face, across her red lips and onto her thin soiled shirt."
"Into this upscale tableaux strode five Baluch men in soiled and unpressed shalwar kameezes, wearing turbans and topees, with stacks of papers under their arms, including the issue of The Herald with the cover story on Gwadar."
"Patients, who [plantiffs 'attorneys] contend did not receive showers on a regular basis, walked around with catheters leaking and dragging on the ground, had wounds left untreated and were forced to sit in soiled bed sheets for hours or, in some cases, even days."