Some synonyms for the word "uhhuh" include "yeah", "alright", "okay", "sure", "got it", "I see", and "understood". These words are often used in conversation to indicate agreement or understanding without necessarily wanting to add much more to the conversation. They can also be used to show that someone is listening to what is being said and acknowledging it. While these words may seem simplistic, they play an important role in communication and help to keep conversations flowing smoothly and effectively.