extremely worried and frightened about a situation, so that you cannot control your feelings
There was still no news of Jill, and her parents were getting frantic.
Your mother's been frantic with worry wondering where you've been.
extremely hurried and using a lot of energy, but not very organized [= hectic]:
I spent three frantic days trying to get everything ready.
Despite our frantic efforts, we were unable to save the boy's life.
frantic pace/rush/haste etc
There was a frantic rush to escape from the building.
a day of frantic activity
a frantic search for her father
He frantically searched for the key.