Room: rùm & seòmar

What’s the difference between  rùm  and  seòmar?  

You might see  rùm  written instead of  seòmar.  Both are loanwords.  Rùm  comes from the English room and  seòmar  comes from the French chàmbre or English chamber. 

What is the correct Gaelic word for room? 

Both seòmar and rùm  are perfectly correct. Remember the concept of rooms of a house is relatively modern one!