a·dop·tive 
(ə-dŏptĭv)
(ə-dŏptĭv)adj.
1.
a. Characteristic of or having to do with adoption.
b. Related by adoption: "increased honesty and sharing between birth families, adoptive families and adoptees" (Robyn S. Quinter).
2. Being a place that one has moved to or resettled in: our adoptive city. See Usage Note at adopt.
a·doptive·ly adv.