The word "achcha" is commonly used in the Hindi language, and it means "good". There are various synonyms for the word "achcha", which can be used to add variety to one's vocabulary. One such synonym is "sundar", which means pretty or beautiful. Another synonym is "mazedaar", which means fun or enjoyable. "Uttam" is another synonym, which means excellent or superior. "Swadisht" is a synonym that means delicious or tasty. "Adbhut" is a synonym that means amazing or extraordinary. Expanding one's vocabulary with synonyms for "achcha" can help in bringing depth and nuance to the language one speaks and writes.