The incorrectly spelled word is "Comittee."

The correct spelling is "Committee," which refers to a group of people appointed or elected to perform a specific function or make decisions together.

The other options, "Hegemony," "Nebulous," and "Elephantine," are spelled correctly and have the following meanings:

• Hegemony: Refers to leadership or dominance by one country or social group over others.
• Nebulous: Means unclear, vague, or hazy, lacking definite form or boundaries.
• Elephantine: Describes something resembling or characteristic of an elephant, often used to mean large, ponderous, or clumsy.