Informal is an adjective of two genders, which describes something or someone that is not formal or a situation where there is no formality.
An informal person is a laid-back person who doesn't follow strict rules. It is also a word used to describe situations where there is complicity, trust or familiarity. Ex: Sunday lunch with my family is always good because the atmosphere is very informal.
Furthermore, the word informal can also indicate a way of dressing. For example, in most contexts, wearing jeans and a T-shirt is dressing informally. In some work contexts, workers are required or encouraged to dress formally, with a suit and shoes, for example.
THE Informal language it is a type of language used in some contexts when there is trust between the interlocutors, being quite common among friends and family. On the other hand, formal language is often used in many work contexts, being a careful, rigorous language and often with technical terms or specific jargon of the profession in question.
Within the arts, the word informal can describe an artist who follows informalism, a movement artist that emerged in the 40s of the 20th century and which originated in artists such as Kadinski, Jackson Pollock and Jean Fautrier. Informalism is characterized by being contrary to the formal and preconceived structuring of the work of art.
informal work
Informal work is the designation given to a type of work where there is no written agreement as a contract. In addition, informal workers do not have a formal contract and usually do not have a fixed salary or paid vacation. The conditions of informal work are very precarious, because the worker has few rights.
This is the case for some people who work as a street vendor, for example, an activity that is often described as informal trade.