1 dry and dull

2 uninteresting

3 dry-as-dust

1 withered

2 dried up

1 dead tree

1 used up

2 dried up

3 exhausted (of resources)

1 to wilt

2 to wither

3 wilted

4 withered

5 drained

6 enervated

7 exhausted

1 a wise man has passed away (idiom)

1 dried bones in burial mound (idiom); dead and buried

1 to rack one's brains (for apt wording etc) (idiom)

1 lit. the spring comes upon a withered tree (idiom)

2 fig. to get a new lease on life

3 to be revived

4 (of a difficult situation) to suddenly improve

1 lit. when the seas run dry and the stones go soft (idiom)

2 fig. forever

3 until the end of time