dusty
Word family
Synonym discussion
Sense: adjective/1
Dusty refers specifically to a dry, fine powder that collects on neglected surfaces — an untouched book on a high shelf gets dusty. Dirty is a much broader word covering any unwanted substance (mud, stains, grease). Grimy describes dirt that is stuck on and hard to clean, like the build-up on kitchen walls. Sooty is limited to black carbon powder from fire or smoke, while sandy means loose grains of sand. A mechanic's hands are grimy, not dusty; a beach towel is sandy, not dusty. Choose dusty only when the material is fine dry powder and cleaning would be simple.
Common collocations
Etymology
Dusty comes from the Old English word 'dūstiġ', which was formed by adding '-ig' (the ancestor of modern '-y') to 'dūst' (dust). This native English adjective has been used for over a thousand years. The figurative meaning 'old and boring' appeared in the early 1900s, pulling from the image of things left untouched for so long that they collect dust.