The given question requires identifying the word with incorrect spelling among the options provided. Here are the options:
catagories
diarrhoea
omission
inaugurate
We need to check each option:
catagories: This is incorrectly spelled. The correct spelling is "categories."
diarrhoea: This is correctly spelled and refers to a medical condition characterized by frequent, loose bowel movements.
omission: This is correctly spelled and means the action of excluding or leaving out something.
inaugurate: This is correctly spelled and means to formally begin or introduce something, such as a new period, policy, or ceremony.
Therefore, the word with the incorrect spelling is "catagories," and the correct spelling is "categories."