Question

one longest word that can made by using the letters only on one row on the keyboard?​

Answer 1

Answer:

Typewriter

Typewriter is the longest word that can be made using the letters only on one row of the keyboard

Answer 2

The 10-letter word typewriter is one of the longest words that can be spelled using just the top row of letters on a qwerty keyboard.

hopefully its helpful for you :)