1. adjective Having the ability to take action and persevere through challenges. In this usage, the phrase is usually hyphenated. With her can-do attitude, Jeannie will have much success in life.
2. expression Yes I can. A: "Will you take this report to accounting for me?" B: "Can do!"
I can definitely do it. (The opposite of No can do.) Jane: Will you be able to get this finished by quitting time today? Alice: Can do. Leave it to me. Bob: Can you get this pack of papers over to the lawyer's office by noon? Bill: Can do. I'm leaving now. Bye.
See also: can