1. With unflagging resolve
   - endlessly, ceaselessly, incessantly, unceasingly, continuously, unremittingly

See also: unending

• belly dancing
• belly flopper
• belly out
• belly whop
• belly whopper
• belly-flop
• belly-land
• belly-up
• bellyache
• bellyacher
• bellyband
• bellybutton
• bellyful
• bellying
• bellylaugh
• bellyless
• Belmont
• Belmont Park
• Belmont Stakes
• Christian Scientist
• Christian theology
• Christian year
• Christiania
• Christianisation
• Christianise