Nextness refers to being in close proximity or being the immediate successor to something. A word synonymous with nextness is "adjacency", which denotes being directly next to or adjoining something. Another synonym for nextness is "proximity", suggesting nearness or closeness in location or time. The term "closeness" can also be used to represent nextness, signifying being physically or temporally close to something or someone. Moreover, the word "succession" is a synonym for nextness, highlighting the concept of following immediately after something else. All these synonyms encapsulate the essence of nextness, conveying the idea of being close, adjacent, or successive to a particular entity or event.