Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

Input: Consider Input: What is an English adjective to describe the following skill: 'able to learn new things quickly'? For example: Billy is very _________, as he learns new skills more quickly than an average person.

Output: Fast learner or quick learner


Input: Consider Input: There is the verb quicken to make something quick or faster, but Merriam-Webster doesn't list slowen. What is the verb to make something slow (as in 'reduce in speed', not 'something that is slow')?.

Output: The word slow itself can be used as a verb. It is an antonym for quicken Slow, from M-W verb to make (something, such as a car) move at a lower speed; to begin to move at a lower speed; to become slower 'the car slowed to a halt'


Input: Consider Input: What goes in the blank? Commerce Commercial Finance Financial Trade __________.


Output: One word is mercantile: Related to trade [ODO]