The untrained volunteers struggled to assemble the medical kits under pressure.

The research team spent the afternoon untraining the neural network to study how removing examples affected its behavior.

When she untrains a guide dog too quickly, it can forget its commands.

He worked to untrain the reflexes he had developed during years of military service.

Despite our efforts, the older horse proved untrainable.

Her untrainedness showed during the emergency drill, revealing gaps in basic response skills.