Select the INCORRECTLY spelt word.

Mergar 

The incorrectly spelt word is Mergar. The correct spelling is Merger.

• Enthusiastic means filled with or showing great interest and excitement.
• Merger means to combine or join two or more things into one.
• Obstinate means stubbornly refusing to change one's opinion or course of action.
• Hypochondriac is someone who is excessively concerned about their health.