To do what you have told someone that you would do.

To do what you have said you will do. 

Done with a great deal of force or strength (adj).

Specific clothing kept for special occasions.

To make or become different, to replace one thing with another, or to substitute something. 

To refrain from speaking or from disclosing something secret.

To fail to attend a scheduled meeting.

To cause something to increase or become bigger, better, higher, etc.

To not use an opportunity to do something. 

To be late for an event.