The language of caeads, piskies, and other folk of the wilds. A handful of remote settlements use it in regions with a large population of quasi-intelligent wildlife, but on the whole few speak it other than wild creatures. Among the civilized peoples, only druids learn Fey with any real frequency. They find it useful when dealing with the denizens of the wilds, a frequent pastime of naturekin.
Some wood sylvan communities also maintain a translator who speaks Fey. Wood sylphs have more ties with druids than most other races, and it is similar enough to Old Sylvan that Fey speakers can usually make themselves understood to Imperial meisylphs.