Definitions

1. interjection

an expression of enthusiasm or determination to accomplish something

“When the team captain shouted “letsdoit”, the crowd cheered them on.”

2. noun

an informal expression used to encourage or motivate people to do something

“The coach used “letsdoit” to fire up the team before the big game.”

3. verb

to make a strong effort or determination to accomplish something

“The team decided to letsdoit and finish the project on time.”