The term 'unusual object' represents something unique, different, and uncommon. Antonyms for this phrase may include words like ordinary, regular, familiar, and standard. These words describe objects that are commonly found, typical, and not extraordinary. Other antonyms may include words like conventional, traditional, commonplace, and routine. These words describe objects that are usual, customary, and expected. When looking for antonyms for 'unusual object', it is important to keep in mind the context of the object and the situation it is being used in. By using antonyms for 'unusual object', one can easily convey a sense of normality, predictability, and familiarity.