The OK gesture is a common gesture used to express approval or agreement. It is made by connecting the thumb and index finger in a circle, while keeping the other fingers straight. The crossword solutions for this term are 'NOD' (3 letters) and 'THUMBSUP' (8 letters). Nodding is a gesture of agreement or understanding, often accompanied by a slight smile. A thumbs up is a gesture of approval, encouragement, or agreement, made by extending the thumb upward while keeping the other fingers closed.