
To determine the antonym of the word "Generous," we need to first understand the meaning of "Generous." A generous person is someone who is willing to give more of something, especially money or time, than is strictly necessary or expected. Now, let's analyze the options provided:
Based on this analysis, the antonym of "Generous" is "Greedy."
Fill in the blank with the correct option. 
The teacher believed that the student’s sudden lack of interest in class was an ..........., as he had always been enthusiastic and attentive.
What comes next in the series? 
\(2, 6, 12, 20, 30, \ ?\)