adoptive

adj. adopted; pertaining to one who adopts; pertaining to something or someone who has been adopted

Adoption is the legal act of permanently placing a child with a parent or parents other than the birth mother or father. An adoption order has the effect of severing the parental responsibilities and rights of the birth parents and transferring those responsibilities and rights onto the adoptive parent(s). After the finalization of an adoption, there is no legal difference between adopted children and those born to the parents. There are several kinds of adoption, which can be defined both by effect (e.g., whether the adoption is open or closed, see below) and by location and the origin of the child (i.e., domestic or international adoption).
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Adjective
1. of parents and children; related by adoption; "adoptive parents"
(antonym) biological
(similar) adopted
2. acquired as your own by free choice; "my adopted state"; "an adoptive country"
(synonym) adopted

adj. adoptive, adopted; pertaining to one who adopts; pertaining to something or someone who has been adopted

adj. adopted, adoptive, taken as one's own