1. Not feeling or showing gratitude
   - ungrateful, thankless

See also: unappreciative

• ingloriously
• Ingmar Bergman
• ingoing
• ingot
• ingot iron
• ingraft
• ingrain
• ingrained
• ingraining
• ingrate
• ingratiate
• ingratiating
• ingratiatingly
• ingratiation
• ingratiatory
• ingratitude
• ingredient
• Ingres
• ingress
• ingression
• Ingrian
• Ingrid Bergman
• ingroup
• ingrowing
• ingrown