There are numerous synonyms for the phrase "outer regular" which essentially means something that is located on the outside and is ordinary or conforming. Some synonymous phrases include "external regular", "peripheral common", and "outside standardized". Other similar terms could be "outer usual", "external typical", or "superficial standardized". These synonyms can be useful when variousiating between different levels of regularity, with "outer regular" implying a more basic level of conformity and predictability. These terms can be applied to a variety of situations, such as describing the appearance of a building or categorizing features of a landscape.