What is greatness for you?

The basic ingredient I'd say is selflessness, nobody great that I know was called so due to them being pious or good for their own sake. Greatness begins when your mind starts thinking about stuff outside your own body's cage.
But all in all Greatness is such a vast word that one can not even begin to enumerate all the possible ingredients that complete the recipe. Different People are termed as Great due to different stuff but most of them have done the stuff that led them to Greatness for People other than themselves.

Greatness is being selflessness, and I dun think any "human being" can be selfless, Our ego, our emotions our heart always take the lead, weather we show is or not. Greatness is the word which can be use to only for ALLAH, He blesses us, forgives us, care about us, even if we dun give Him the rights (Namaz, Roza, Quran) He has on us. We can't think like that.

For me greatness is bravery.. A great person is one who is brave enough to stand up for what he wants or who have courage to leave something he wants for betterment of others

It is strictly dependant on the person for whom greatness is being considered.It is totally upto me when I claim someone to be great.I don't look at any ingrediants of one's personality,it is just the matter of a very moment when something said by someone clicks me in and then I am a believer.Affinity for something comes from heart,and it does'nt require any justifications then!

greatness is courage, forgiveness and love ... !
courage to stand up for justice
forgive the mistakes of friends and family and be together agian
love and try to make ppl happy :)

I second Zainab's point of view. What we are and what we have - it comes from Allah. Even, for instance, if we give some money to help someone, it does not show our 'greatness', rather it shows Allah's Greatness for providing us with means to help someone and gain reward through our deeds.

If you have the ability to sincerely wish for others what you wish for yourself (- the best of all good things in both worlds),
If you have the ability to understand people, their emotions and their needs and manage to treat them with love and willing to go an extra mile to help them and be there for them,
If you show patience towards others,
If no one is able to see what pain/difficulties you are going through simply because you remain as kind and caring towards others as you used to otherwise,
If you can forgive someone,
If you are aware that you are actually 'nothing' at all and thus remain humble,
If you remember Allah in everything you do,
If you have the courage to fight for a good cause,
If you can be honest and sincere, when everyone around you is not,
.....and the list goes on,...
then, as long as people remember you, they might speak good of you.

Do what is liked by Allah and do it for Him and you will be liked by Him. What else could one wish for?

I agree with all of them. Greatness comes from sacrificing, being selfless, making justice, forgiving and they all lead to bravery. But these are only humanly traits, and they can be achieved easily when we follow what Allah and Holy Prophet (S.A.W) guided us. But, as Sumi and Zainab pointed out, real greatness, which has no measures, is the Greatness of Allah. Nothing can be compared to Him.
And those people who want to make Allah happy are considered to be great, because they always want the good of others, they have pure intentions, and this leads to greatness and piousness as well.

When a man give up his self interest for the sake of others.