dreadfully

adverb

Extremely.

SYNONYMS

awfulawfullydeaddecidedlydesperatelydevilishdevilishlyever soexceedingexceedinglyexceptionallyextraordinarilyextremelyfairfearfullyfrightfullyhellishimmenselyintenselyjollylekkerlotsmajorlymegamightymostmuchmuchooh-soparticularlyplumbpositivelypowerfulquiterealreallyremarkablyrightseriouslysoreterriblyterrificallyto a great extenttoo … for wordstremendouslyultrauncouncommonlyveryvery muchwell