If you underfit the regression model by using too few parameters, it will fail to capture the true patterns in the data.

The model is underfitting the training data despite its complexity.

Underfitting often leads to poor performance because the model fails to capture important patterns in the data.

The tailor underfitted the jacket, so it hung awkwardly around the shoulders during the ceremony.

The model underfits the training data when it lacks sufficient complexity to capture the underlying patterns.

The research paper documented several underfittings that caused the model to generalize poorly.

The model's predictions failed to capture the variability in the dataset because of several underfit streams.

Geologists concluded that the underfit stream winding through the wide valley could not have carved the landscape itself.