Meaning of Undid
Unknown / অজানা / अज्ञात
simple past tense of undo.
to reverse the doing of; cause to be as if never done: Murder once done can never be undone.
to do away with; erase; efface: to undo the havoc done by the storm.
to bring to ruin or disaster; destroy: In the end his lies undid him.
to unfasten by releasing: to undo a gate; to undo a button.