adv. 1 in reality; in fact. 2 positively, assuredly (really useful). 3 (as a strong affirmative) indeed, I assure you. 4 an expression of mild protest or surprise. 5 (in interrog.) (expressing disbelief) is that so? (They're musicians.
Really?).
REALLY
Meaning of REALLY in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012