really
//ˈriːəli//
Adverb
1
In actual fact or truth; genuinely or truly.
Is he really a doctor?
2
To a great extent or degree; very or extremely.
I'm really tired today.
3
Used to emphasize a statement or response.
I really appreciate your help.
Interjection
1
Used to express surprise, interest, or disbelief.
Really? I can't believe you won the lottery!