Pokemon name meaning:
テール tēru, tail – Japanese word based on English.
Renard – French, “fox”
ルナー reflects French pronunciation of Renard – the French unnaccented e roughly approximated by ル ru and the final long ah-sound with the d silent.
Reynard/Renard was a fox trickster in mediaeval European tales, a very distant cousin of the Japanese kitsune.
The traditional French word for “fox” was goupil from Latin vulpecula. However, mentioning the fox was considered bad luck among farmers. Because of the popularity of the Reynard stories, renard was often used as a euphemism, so that today renard is the standard French word for “fox” and goupil is now dialectal or archaic.