Maintien is a French word that translates to 'upkeep,' 'maintenance,' or 'upholding' in English. Synonyms for maintien can include sustaining, preserving, supporting, keeping, retaining, safeguarding, and protecting. These words convey the idea of preserving something or keeping it in good condition. Maintien is often used to refer to the upkeep of buildings, equipment, or even principles and values. In any situation, the maintien of something is important to ensure that it remains functional and useful for a longer period. Synonyms for the word maintien can help add variety to one's vocabulary and improve written or spoken communication.