1. Joined or linked together
2. Having the parts or elements logically linked together
3. Related by blood or marriage
4. Having social, professional, or commercial relationships
5 of a set; having the property that any two of its points can be joined by a line completely contained in the set; also; incapable of being separated into two or more closed disjoint subsets
abutting · adjacent · adjoining · adjunctive · affiliated · affined · associated · attached · conterminous · contiguous · coupled · engaged · joined · linked · machine-accessible · neighboring · on · on-line · related · related to · siamese · socially connected · well-connected · wired