For words such as (coffee) grounds, (automobile) emissions etc. that are clearly plural but equally clearly uncountable (one coffee ground???, one CO2???, one emission???) how do we rationalize fewer or less? A TV commercial describing a green automobile as having "fewer emissions" prompted my thinking - it sounded weird! It's not as though one can say it has 17 emissions per mile while a gas-guzzler has 39! Conversely, the -s nature makes "less emissions" also grate. There is a sleazy way out of this that doesn't answer the original question : lower emissions, but it doesn't work for grounds! Mods: I couldn't find any threads but it's not an easy topic to search, so if this has been discussed before please show me the thread to add to, thanks.