Ordinary

From Ref

Main form: ordinary, adjective. Used restrictively (restricting the subject) or emphatically (to emphasize the subject, without actually adding any detail). In sciences, typically used in a binary sense (something is either normal or is not normal), whereas in the social sciences and daily parlance, typically used to describe position on a wider scale.

Typical use:

Opposite words: special, extraordinary

Derived words: Extraordinary

Mathematics

Ordinary (mathematics)

Economics

Ordinary (economics)