Simple Definition of really
—used to refer to what is true or real
: without question or doubt
: to a great degree
Full Definition of really
1 a : 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
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 Kids
Definition of really
1 : in fact <She didn't really mean it.>
2 : without question <It's a really fine day.>
Seen and Heard
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