及物动词

1. 刺激(某人)对…的欲望;激发（某人）对…的兴趣
If someone or something whets your appetite for a particular thing, they increase your desire to have it or know about it, especially by giving you an idea of what it is like.

1. sharpen by rubbing, as on a whetstone

2. make keen or more acute

e.g. whet my appetite

Synonym: quicken