σφοδρός

Etymology
Clearly related to. The origin of these words is but perhaps related to  and.

Adjective

 * 1) vehement, violent, excessive
 * 2) violent, impetuous (of men)
 * 3) active, zealous
 * 4) strong, robust
 * 1) strong, robust

Adjective

 * 1) vehement
 * 2) violent, fierce