Choose the option that completes the sentence using the correct spelling.
The ______ disappearance of my diary bothered me all day.
Show answer & explanation
Correct answer: D
Explanation
Correct Answer
mysterious
Explanation
Orthographic and Spelling Rules The word "mysterious" is derived from the noun "mystery." When transforming the noun mystery into an adjective using the suffix -ous, the trailing letter "y" changes to an "i" before adding the suffix. The initial syllable retains its Greek-derived spelling with a "y" (mys-).
Contextual Fit The sentence describes an event that is full of mystery or difficult to explain. The correct, standard dictionary spelling that balances the initial "y" with the internal "i" is mysterious.
Distinction from Alternatives
Mystereous, mistereous, and misterious are common phonetic errors that fail to correctly apply the standard base-to-adjective spelling transformation rules for this word root.
Key Points
Correct Form The mysterious disappearance of my diary bothered me all day.
Grammatical Role Adjective (functions as an attributive modifier describing the noun "disappearance").