Definition: Miscellaneous, miscellaneous, miscellany, miscellaneous are all informal or slang terms in English that refer to things or items not considered essential or important by the person using them. Miscellaneous: 1. Miscellaneous: Sometimes called 'misc', it refers to something that is not particularly useful or important and is often included in an article or list of items. 2. Misery: This word comes from Greek and means 'sorrow, misery'. In English, it can also be used to describe a person who has been through a difficult time. Miscellany: 1. Miscellany: It refers to a collection of things that are not necessarily related in any particular way but are often useful for the context. 2. Missed Opportunities: This phrase is sometimes used by writers and other people who have missed opportunities because of an event or situation they were unaware of. Miscellaneous is commonly used to describe something that is neither essential nor important, while miscellaneous is more likely to be used when talking about something that isn't particularly useful or not widely known.