অর্থ : By bad luck.
উদাহরণ :
Unfortunately it rained all day.
Alas, I cannot stay.
সমার্থক : alas, unfortunately, unluckily
By good fortune.
Fortunately the weather was good.Regrettably ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Regrettably ka matlab kya hota hai?