Adverb
To a low degree, not particularly, not especially.
I’m not really hungry now, so let’s have dinner later.
Not actually (a hypothetical will not, in fact, come to pass), often rhetorical.
You’re not really going to marry him, are you?
Most people do not really want freedom, because freedom involves responsibility, and most people are frightened of responsibility. Sigmund Freud
Misfortune shows those who are not really friends. Aristotle
An empty head is not really empty; it is stuffed with rubbish. Hence the difficulty of forcing anything into an empty head. Eric Hoffer
I rarely believe anything, because at the time of believing I am not really there to believe. Gertrude Stein
You do not really know your friends from your enemies until the ice breaks. Icelandic Proverb
You do not really understand something unless you can explain it to your grandmother. Russian Proverb