1. Not feeling or showing gratitude
   - ungrateful, thankless

See also: unappreciative

• Pitot
• Pitot head
• Pitot tube
• Pitot-static tube
• pitprop
• Pitressin
• pitsaw
• Pitt
• Pitt the Elder
• Pitt the Younger
• pitta
• pittance
• pitted
• pitter-patter
• Pittidae
• pitting
• Pittsburgh
• Pittsburgh of the South
• Pittsfield
• pitty-pat
• pitty-patty
• pituitary
• pituitary body
• pituitary dwarf
• pituitary gland