Definition of really
1a : in reality : actually <things as they really are> <there was nothing peculiar about her doing this, really — Peter Taylor>b : truly, unquestionably —used as an intensifier <a really beautiful day>c : very 2 <look really close> <he runs really fast>
2 —used to emphasize an assertion <you really should read Yeats> <really, you're being ridiculous>
Examples of really in a sentence
The dog runs really fast.
The water is really hot.
She's a really nice person.
I had a really good time at the party.
First Known Use of really
REALLY Defined for English Language Learners
Definition of really for English Language Learners
—used to refer to what is true or real
: without question or doubt
: to a great degree
REALLY Defined for Kids
Definition of really for Students
1 : in fact <She didn't really mean it.>
2 : without question <It's a really fine day.>
Seen and Heard
What made you want to look up really? Please tell us where you read or heard it (including the quote, if possible).