There is no single common English word that uses all of the letters. It can form phrases such as "caravel surtax."
The longest single word that can be made is "traversal" (nine letters).
The letters spell the word avian. It utilizes all of the letters invaa.
The letters 'ruetepra' unscramble to form the word aperture.
Those letters will spell ethnic.
Those letters will spell decathlon.
The word is MAYFLOWER.