The word "more octagonal" refers to a shape that has eight sides of equal length. Synonyms for this word include "more polygonal," "more regular," "more geometric," "more symmetrical," "more angular," and "more multi-sided." These words all describe a similar shape that is made up of multiple sides and angles. A shape that is more octagonal may also be referred to as "more faceted," "more prismatic," "more pyramidal," or "more angular." These synonyms can be used interchangeably to describe a shape that has eight sides, each of which is of equal length and forms angles of 135 degrees with adjacent sides.