The term "strong lacunary" pertains to a mathematical concept describing a sequence of numbers with missing values in between. Some synonyms for this term include "sparse," "incomplete," "hollow," "gap-ridden," and "inchoate." These words all convey the idea of something being deficient or deficient in certain areas. Additionally, some other related terms that could also describe this concept include "discontinuous," "broken," "patchy," and "unconnected." Overall, these synonyms underline the notion of a sequence of numbers that has interruptions or gaps without a clear or defined pattern. This type of mathematical framework is used in various fields, including signal processing, data analysis, and cryptography.