Apologize to your uncle for hurting him with these sorry messages and express your apology. You can share/send these messages via Facebook, Whatsapp, Twitter etc.

I feel terrible I know, 
It was my fault and I accept 
I am sorry won't repeat this 
Please accept my heartfelt apology!

I never realized that I hurt you 
But, I know that you felt terrible 
So sorry I really feel from my heart 
Please let us have a wonderful new start 
Sorry for all that! 

My memories with you are priceless and valuable 
Please forgive me uncle 
This won't be repeated ever again 
Sorry for everything!

So sorry to hear about this, 
Life will be surely good to you in future 
Please stay strong 
I am sorry! 

Sorry to hear about the situation 
I have no reasons enough to sympathize with you 
Just stay strong and blessed
I am so sorry!

Mistake might be big or small 
What matters is the regret from the heart 
I truly regret what I did 
I am really sorry!

I know what I did was not acceptable 
But I also know that you have a big heart 
So sorry for what I did 
I know that you will forgive me!

This apology is from my heart 
I did wrong and I know about it 
But want to let you know that this won't be repeated again
I am so sorry!

Sorry because I mean it 
Sorry because I wont repeat this 
So sorry please forgive me 
As I won't do this again!

Sorry for creating a problem in your life
I did not mean to hurt you 
Please forgive me
I am sorry uncle!

Sometimes things just happen without reason 
I did not intent to hurt you with my words 
But If I did, then I am really sorry for it 
It's my mistake and I ask for forgiveness 
I am sorry, please forgive me dear uncle 
This won't ever happen again 
This time will not come back ever!

That incident did shake me as well 
I behaved really rude with you 
I told you things that I should not have told you 
I am sorry for my mistake 
I apologize from my heart 
Please end this matter and let us start 
Another fun session of laughter and smile 
I am sorry uncle!

Memories with you are awesome 
I promise that this won't ever repeated again 
I will be careful with my words next time 
I am really sorry uncle 
Please forgive me being kind 
I ask for heartfelt forgiveness from you
I know you have a big heart!

You know something is missing 
And something is empty within 
When someone close to you does not talk to you 
I am sorry for whatever happened uncle 
I promise it will not happen again 
A heartfelt sorry from me to you!

Sorry is an expression and emotion 
I know I caused the hurt 
I know I did things out of the blue 
But I know that you have a heart of gold 	
You are so kind and you are true 
Uncle please forgive me through 
The mistake was mine 
I am sorry for the same!

I am sorry and I apologize 
For speaking to you this way 
I think I was not in the mood 
So it got all in the way 
I am sorry as I did not 
Meant to hurt you bad 
I am really feeling so sad
 
Sorry uncle for everything..I am sorry!

Things go wrong at times 
When you know you are at fault 
I would just like to tell you 
That it was indeed my fault 
It was a special day that day 
I spoilt all the fun for you 
I am sorry for everything uncle 
Hope you will forgive me though!

I think I can only tell you thank you 
From my heart and apologize
For everything from the start 
I accept the mistake was on my part 
Sorry uncle this won't repeat again 
I have realized my mistake in life 
Really sorry for everything that happened
 
Please forgive me!