Similar words: regretful, fretfully, fretful, regret, regrettable, regrettably, tactfully, wistfully. Meaning: [rɪ'gretfʊlɪ] 
adv. with regret (used in polite formulas).
adv. with regret (used in polite formulas). 
Random good picture Not show
31. We the editors of the International Journal of Cardiology and Phytotherapy Research regretfully report a case of scientific fraud.
32. Crossed a paragraph again, I tell her tropical fish also died regretfully again.
33. Regretfully Ayub didn " t show satisfaction to Chinese assistance. "
34. " Is it over? " Ke - ting asked regretfully. As he started to rise, the lake burst into light.
35. Now the hall - boy pounded on the door and he released his hold upon her regretfully.
36. Regretfully, I only know this girl's name - Xu Pei - hua .
37. I very regretfully tell you, and your examination is failed.
38. Regretfully, we can't regulate the irregular liner on the gulf.
More similar words: regretful, fretfully, fretful, regret, regrettable, regrettably, tactfully, wistfully, boastfully, doubtfully, thoughtfully, respectfully, distrustfully, forgetful, regress, egregious, segregate, regression, segregated, regressive, desegregate, segregation, regressive tax, at full speed, fully, awfully, carefully, joyfully, ruefully, balefully.