The nightclub had some sleazy posters outside featuring barely dressed dancers.

sleazy 是形容词，意思是"低俗的、廉价的、不体面的"，常用来形容场所、广告或人的行为举止显得粗俗、不雅或品质低下。这个词带有贬义，暗示缺乏品味或道德标准。