There are several antonyms for the word "yakketyyaks," which refers to lengthy, pointless conversations or idle chatter. The opposite of this would be a conversation that is brief, meaningful, and to the point, such as a short exchange of important ideas, news, or instructions. Other antonyms for "yakketyyaks" would include quiet, silence, and stillness, indicating a peaceful and serene environment devoid of needless chatter. Another antonym would be productivity, which refers to actively working or accomplishing tasks, rather than wasting time on meaningless conversations. Ultimately, the antonyms for "yakketyyaks" represent the importance of efficient communication and effective use of time.