momu
1.

To apply significant pressure and movement to an object with one's hands in order to soften or alter its state, often by squeezing, folding, or shaking it vigorously.

2.

To engage in a physical struggle or contest with another person, contributing to their development or training, particularly in sports or competitive situations.

3.

To experience and endure various difficulties and challenges through interactions with diverse people and situations, leading to personal growth and maturity.

4.

To vigorously shake or toss an item or person, creating a strong, destabilizing movement that is often characterized by disorder or tumult.

Example:

その結果の報道に満足して彼は手をもんでうれしがっていた。