óformlegt

Óformlegt is an Icelandic adjective meaning informal, non-formal, or casual, used to describe language, behavior, or situations that do not adhere to formal norms. It is the negative form of formlegt ("formal"), formed with the negative prefix ó- attached to formlegt. In linguistics and style guides, óformlegt refers to a register characterized by colloquial vocabulary, contractions, simpler sentence structures, and looser adherence to prescriptive rules, as encountered in everyday speech, casual conversations, and informal correspondence.

In written Icelandic, setting the tone as óformlegt typically means avoiding honorifics, formal politeness strategies, and elaborate formulas; it may include slang or regional expressions, abbreviated spellings, and direct address. Conversely, formlegt style aims for precision, politeness, and conventional structure, especially in official documents, academic writing, and formal letters.

The term is used across domains such as education, media, and digital communication to indicate the expected level of formality. It is context-dependent; what is óformlegt in one setting may be inappropriate in another, depending on audience, relationship, and purpose. The boundary between formlegt and óformlegt evolves with social norms, technology, and culture, and it can vary by generation or community.