معنی کلمه :‌ ingrateful

Ungrateful; thankless; unappreciative.

Unpleasing to the sense; distasteful; offensive.

Right, as opposed to sinistral, or left. Dextral shell (Zoöl.), a spiral shell the whorls of which turn from left right, or like the hands of a watch when the apex of the spire is toward the eye of the observer.