Mobile ad hoc networks is a challenging area of engagement since these networks are dynamic and completely without a definite structure. The lexicon, as a MANETs notion, plays an indispensable role in establishing smooth communication and coordination among the network nodes. The abstract's intention is to give an in-depth outlook for the role of lexicon in MANETs, and then it gives the central points of its importance in the connection of not only different communication protocols but also routing algorithms and security mechanisms. The abstract is mainly about the very basics of lexicon in relation to MANETs, with a more particular accent on how it enables strong communication if there is no fixed structure behind it. Suppose you also deal with the problems and possibilities of the so-called lexicon, which is the integration of lexicon technologies, such as unpredictable mobility and resource limitations. We'll also see the application of the lexicon in MANETs in the future. This is an approach based on the nominal size of the items focused on lexicon technology. For example, smarter routing protocols, QoE/QoS adaptation, and a defence guarantee for the protected message are among the key features that should be addressed through the application of lexicon technology in MANETs. The paper will review the current research work being conducted and present future directions for lexicon-driven approaches to optimize the performance of MANETs and make them more resilient to the variation of their operational environment.