1. With passionate fervour
   "both those for and against are fervently convinced they speak for the great majority of the people"
   - fierily, fervidly

See also: fervent

• echo sounding
• echocardiogram
• echocardiograph
• echocardiography
• echoencephalogram
• echoencephalograph
• echoencephalography
• echoey
• echogram
• echography
• echoic
• echoing
• echolalia
• echoless
• echolike
• echolocation
• echovirus
• echt
• Eck
• Eckhart
• eclair
• eclampsia
• eclectic
• eclectic method
• eclectically