äpsus

õpsus is a colloquial Estonian term primarily used to refer to a teacher. It is an informal and familiar way of addressing or referring to a teacher, often used by students. The word derives from the more formal term "õpetaja," which also means teacher. While "õpetaja" is the standard and respectful term, "õpsus" carries a more casual and often affectionate connotation.

The use of "õpsus" is generally limited to informal settings, such as conversations among students or between students and their teachers in a friendly context. It is not typically used in formal academic writing or official communication. The term reflects a common linguistic practice in many languages where informal diminutives or nicknames are developed for professions or individuals to foster a sense of closeness or familiarity.

The popularity and usage of "õpsus" can vary depending on the age group and educational institution. Younger students might use it more frequently, while older students or those in higher education might opt for more formal address. It is a part of everyday spoken Estonian, contributing to the nuances of informal communication within the Estonian language.