Coolly is spelled correctly. Procede should be proceed. Superintendant should be superintendent. Arguement should be argument.
Yes, "negotiable" is spelled correctly.
You have spelled 'still' correctly.
Yes, engineer is spelled correctly in your question.
Yes, surprisingly is spelled with an S. Surprisingly is how you spell it. You spelled it correctly.
You've spelled it correctly.
Convenience (easy access or availability) is correctly spelled.
Correctly: How did Elise spell? She spelled correctly.
it is correctly spelled iPod.
It's kindergartner, not kindergartener.
You spelled it correctly: pumpkin.
You've spelled it correctly.