How to spell ADDITIOIN correctly?

The correct spelling of "additioin" is "addition". Possible suggestions to correct this misspelling include: using spellcheck, proofreading, sounding out the word, consulting a dictionary, and practicing proper spelling techniques.

• addiction Drug addiction is a growing problem worldwide.
• addition In addition to studying for my midterm, I also have a paper to write.
• additions The new additions to the menu have been very popular with customers.
• audition

Contempories

• contemporaneous
• contemporaries
• contemporary
• contemptuous
• cotemporaries