dismayful

adjective3

1. •
   (no longer used) Terrifying

   • And much dismay'd with that dismayful Sight, That back she would have turn'd for great Affright — 1596
2. •
   (no longer used) Dismaying; disheartening.

   • No announcement could have been more dismayful; but this time Matilda said nothing. — 1871
3. •
   (no longer used) Dismayed; full of disappointment or low spirits.

   • "Boots?" —said his mother, in an accent that sounded a little dismayful. — 1858