Synonyms are words that have similar meanings to a particular word. When it comes to the word "lightable", which refers to something that can be illuminated or lit up, several synonyms come to mind. The term "illuminable" is often used to describe objects that can be easily lit, emitting light or becoming more visible. Another synonym could be "igniteable", which implies the ability to make something burst into flames or catch fire. Additionally, the word "brightenable" can highlight the concept of making something brighter or enhancing its luminosity. These synonyms help create a diverse vocabulary to describe objects or materials that possess the quality of being lightable.