mindmap root((唯一)) single implies being unaccompanied or unsupported by or not combined or united with any other: a ~ example will suffice. sole applies to the only one that exists, acts, has power or relevance, or should be considered: my ~ reason for moving there. unique applies to the only one of its kind or character in existence: the medal is ~, for no duplicates were made. separate stresses discreteness and disconnectedness or unconnectedness from every other one: a country with a ~ set of problems. solitary implies being both single and isolated: television was her ~ link to the outside world. particular implies singular or numerical distinctness from other instances, examples, or members of a class: a ~ kind of wine.