Home Misspellings How to spell additionaly? Additionaly or additionally? Which one is correct? by hersey March 19, 2017 Reading Time: 0min, 8sc + - 0 Additionaly or Additionally Which one is correct? You can find the answer below. Incorrect Addionally, Additinally, Additionaly Correct Additionally You can find more information about Additionally word here. Rate this post Correct spelling of addionallyHow do you spell addionally?