To an extreme degree, causing intense suffering.

Extremely tedious or lacking in interest.

अत्यधिक दर्दनाक

English Usage: The treatment was excruciatingly painful for the patient.

Hindi Usage: इलाज मरीज के लिए अत्यधिक दर्दनाक था।

Extremely slow, causing annoyance or frustration.

अत्यधिक धीमा

English Usage: The traffic was excruciatingly slow during rush hour.

Hindi Usage: ट्रैफिक की गति पिक घंटे के दौरान अत्यधिक धीमी थी।