However, depending on the context, it can have slightly different shades of meaning. Here are some examples:
* To fulfill a promise: This is a common usage of "niravettuka". For example, "He promised to help me, and he fulfilled his promise."
* To achieve a goal: "She worked hard and fulfilled her dream of becoming a doctor."
* To complete a task: "He fulfilled all the requirements for the job."
* To satisfy a need: "The food fulfilled his hunger."
The exact meaning of "niravettuka" will be clear from the context in which it is used.