Definitions

1. interjection

A childish or nonsensical term, often used to express excitement or enthusiasm.

“The kids were shouting ‘wiwi’ as they played in the park.”

2. verb

To speak or utter in a childish or nonsensical manner.

“The child was wiwi-ing loudly in the classroom.”

3. noun

A foolish or nonsensical idea or notion.

“His wiwi about flying to the moon was met with laughter.”