Jentacular is a relatively unknown word that describes something related to breakfast. However, there are several other words that can be used to describe something that is eaten or consumed in the morning. For example, matutinal refers to something that is done or occurring in the morning, while break of day describes the first light of dawn when it is just becoming visible. Additionally, first meal of the day, morning meal, breakfast, and brunch can all be used to describe jentacular. While jentacular may not be a common word, there are many synonyms available to help describe the important meal of breakfast.