What does outmoded mean?

Outmoded means something that is no longer in style, useful, or has fallen out of favor due to the emergence of new methods, practices, or technologies. The term specifically relates to items, ideas, or practices that have become outdated and are typically replaced by more modern alternatives. Therefore, when you refer to an item as outmoded, you are effectively indicating that it is obsolete.

In contrast, the other choices do not capture this idea effectively. An item or concept described as common or unrefined does not inherently convey the sense of being outdated or no longer useful. Adaptable refers to the ability to adjust to new conditions, which contradicts the notion of being outmoded. Heavily weighted describes something that has a significant mass or influence, but does not relate to the concept of obsolescence. Thus, recognizing outmoded as synonymous with obsolete highlights its meaning accurately.