The answer to the crossword for the term 'STATE EAST OF WASH.' is IDA, which is the abbreviation for Idaho. Idaho is a state located in the northwestern region of the United States, east of Washington. It is bordered by Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. Idaho is the 14th largest state in the US, with an area of 83, 570 square miles.