The word "precise" means exact, accurate, or specific. To find the most appropriate antonym for "precise," we should look for a word that means lacking accuracy or specificity.

Option 1: "Complicated" - While "complicated" suggests complexity, it doesn't necessarily imply a lack of precision, so it is not the best antonym for "precise."

Option 2: "Inevitable" - This word means something that is certain to happen and is unrelated to the concept of precision, so it is not a suitable antonym.

Option 3: "Rough" - This is the most appropriate antonym for "precise." "Rough" implies a lack of smoothness, precision, or accuracy.

Option 4: "Adequate" - "Adequate" means satisfactory or enough for a particular purpose, and it is not an antonym for "precise."

Therefore, the most appropriate antonym for "precise" among the options provided is "Rough" (Option 3).