If you used the built in retweet function then you can't. If you did it the old way by typing 'RT' at the beginning of your tweet and copying and pasting the message you're retweeting, then simply delete your tweet.
Hover over the retweet on your timeline (i.e. on your profile page) Then, click on the word "retweeted" and it will undo the retweet and delete it from your tweets.
If you are trying to get more retweets, consider using these favorable words/phrases.
The only way you would receive these tweets is if they are retweets or if you are following them.
it means 5 retweets from your faves
None. Nothing you tweet is that interesting.
Click on the "retweets" tab on the right hand side of your hompage.
It expands the tweets to show you if anyone replies to them, and who favorites and retweets them.
You can't see who retweeted you on certain applications, such as Tweetdeck for iPhone and such. However, on web, you go to your homepage, and below the bar where you enter your tweets is a bar that has Home, Mentions, Retweets, Searches and Lists. Click on the Retweets button, a menu will drop and click Your Tweets, Retweeted. Click on the tweet to see who retweeted said tweet. Sometimes you cannot see who retweeted it because the person has a private profile and you're not following him/her.
do means you do it and undo means to undo or get ride of it
redo-is when you do sometyhing over! undo-is when u undo something
There is no full form.. it is opposite for do...
to undo on a mac computer, you have to go to edit and press undo. or go to file and press undo. forgot which one.