semiattached
sem·i·at·tached
(sĕm′ē-ə-tăcht′, sĕm′ī-)adj.
Partially attached or joined: a semiattached two-family frame house.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.