supererogatory (adjective)

1. The supererogatory features such as the grand chandeliers and ornate trimmings added a touch of luxury to the lavish mansion.

2. He surprised her with a supererogatory bouquet of roses, showing his love and affection for her.

3. The superhero's supererogatory powers allowed him to save the city from the brink of destruction.

4. The protagonist possessed a supererogatory level of strength, enabling him to defeat formidable enemies effortlessly.