“Sorry, the ink smeared a little.”
You're giving a friend a gift for her baby shower. You wrote a note on a card, but you accidentally touched it while the ink was wet. You apologize for the messy writing when you give her the gift.
Sorry, the ink smeared a little.
"Sorry" is a way to apologize for a small mistake you made. When you make a larger mistake and want to apologize more strongly, you can say "I'm sorry for ___ing":
I'm sorry for calling you by mistake.
However, in most situations this would be much too strong of an apology. So just saying "Sorry" is sometimes more appropriate:
Sorry I didn't call you back sooner.
When something like ink or paint gets wiped or spread around on a surface, you say that it "smeared". Other things that can "smear" include:
Here's how "smear" fits in a sentence:
I accidentally smeared the ink.
My lipstick smeared.
There's pasta sauce smeared all over your shirt!
Another word with a similar meaning (but less common) is "smudged".