Available Definitions:
1) a. - Full of health; free from illness or disease; well; whole; sound; healthy; as, a healthful body or mind; a healthful plant.
2) a. - Serving to promote health of body or mind; wholesome; salubrious; salutary; as, a healthful air, diet.
3) a. - Indicating, characterized by, or resulting from, health or soundness; as, a healthful condition.
4) a. - Well-disposed; favorable.