Final answer:
The word 'jejune' means insipid or not interesting. It is the correct answer within the provided options, indicating something that is dull or lacking in flavor.
Step-by-step explanation:
The word 'jejune' has a few meanings, but in the context of the options provided, it refers to something that is insipid, not interesting or lacking in nutritive value. Therefore, the correct answer among the options is 2) Insipid. The word 'jejune' can also mean juvenile or immature, but that sense is not represented by any of the options given.