When it comes to synonyms for the word "wash room," there are several options to choose from. One common alternative is "bathroom," which is widely used in the United States. Another common synonym is "restroom," which is commonly used in public spaces. Other synonyms for "wash room" include "lavatory," "toilet," "water closet," and "loo." Some may also use the term "powder room" or "half bath" to refer to a smaller, more compact version of a wash room. Regardless of which synonym is used, all of these terms refer to a space dedicated to personal hygiene and toileting.