Oppressive burden is a term used to describe a situation in which someone or something is weighed down by an excessive amount of responsibility or difficulty. This term can be broken down into two words: deadweight (10 letters) and ONUS (4 letters). Deadweight is a term used to describe a burden that is too heavy to bear, while ONUS is a term used to describe a burden or responsibility that is placed on someone. Together, these two words form the phrase oppressive burden, which is often used to describe a situation in which someone is overwhelmed by the amount of work or responsibility they have to take on.