The vocabulary of solitude and the reform of the Grandimontines. For some decades, historians of the Gregorian Reforms have changed their focus of thinking, becoming less interested in the conflict between the Empire and the papacy than in disputes between the ecclesiastical hierarchy and lay powers, or even between the Religious themselves. It is a matter for the period in question of organizing relationships between members of the Christian body. In this context, autonomy, and the distinction and the separation of clergy from the secular world, play an important role. All these ideas refer to a fundamental question, that of how to reconcile within the Church the forces driving religious reformers such as hermits. There are many different answers, and they witness to the many contradictions within the thinking of reformers. The intention of this paper is to approach this question by studying the hermit monks of Grandmont, more precisely starting with three important documents from the origins of the Grandimontines, namely the Thoughts, the Life of the founder, and the Rule for the Religious. The various types of sources selected for this analysis are chosen to cover the first period of the establishment of the Order. Founded by Stephen of Thiers around 1078 at Muret, and transferred to Grandmont after the death of the master in 1124, the congregation quickly becomes one of the beacons of reform in the Limousin. In fact, Grandimontines tried to distance themselves from secular matters through strong regulation of economic activities, such as land ownership and animal husbandry. However, their independence was not absolute. The proximity of counts and kings, particularly of Henry II Plantagenet, is the basis of the development of the order from the middle of the XIIth century under the control of Stephen of Liciac, who was prior between 1139 and 1163. A consideration which seeks to understand the purpose of the Grandimontines in withdrawing from the world could shed some light on the dynamic nature of solitude and community. Such kinesis is important in the monastic contribution to the Reform, discussion of which will require the help of a semantic approach. To address vocabulary which expresses key concepts of monastic practice from the end of the XIth century and the beginning of the 12th century - solitudo, contemplatio, heremus, quies, desertum, etc. - could present new perspectives for research.