What is onus? How to use in English

The Latin word "onus" translates literally to "burden" or "load." It is believed to have originated from the verb "onere," which means "to load" or "to burden." The Latin word was used to describe any heavy or weighty object or task. In Latin grammar, the noun "onus" is also used as a grammatical term to describe the burden of a grammatical rule or construction. It is commonly found in Latin grammar books and guides as a way to explain complicated grammatical concepts. In English, the Latin word "onus" is still used today in both a grammatical and figurative sense. It is used in grammatical contexts to describe the requirement for a particular grammatical form, such as the "onus contraeiunctivus" in Latin, which is the requirement that certain verbs be change to the plural form in the perfect tense. In a figurative sense, "onus" is commonly used to refer to a burden or responsibility that is too heavy to bear. This usage can be seen in phrases such as "the onus was on her to succeed" or "the onus is on us to find a solution." In these instances, the word is used to describe a heavy or difficult responsibility that is being placed on someone. In summary, the Latin word "onus" originated from the verb "onere," meaning "to load" or "to burden," and refers to a burden, load, or responsibility in both grammatical and figurative contexts.