1. to be in a state of wild, excited, or anxious activity; to behave in a desperate or frenzied manner
She was frantic when she couldn't find her passport before the flight.
Ela estava frenética quando não conseguia encontrar seu passaporte antes do voo.
2. to be extremely worried, panicked, or distressed
The mother was frantic after her child went missing.
A mãe estava desesperada depois que seu filho desapareceu.