1. insipid; flavorless
1. Food generally tastes vapid to me unless it's highly spiced.
2. dull; unimaginative
2. I find most popular fiction vapid.
vapidus (flat, insipid) (Latin)
Vapid is not Rapid and hence dull. vapid sounds similar to rapid (~ very rapid). If you cook in a rapid manner, you may spoil the taste of the food, or say, when you eat rapidly. you may not get the taste of the food.