to choose or take as one's own; make one's own by selection or assent

to adopt a nickname.

to take and rear (the child of other parents) as one's own child, specifically by a formal legal act.

to take or receive into any kind of new relationship

to adopt a person as a protégé.

to select as a basic or required textbook or series of textbooks in a course.

to vote to accept

The House adopted the report.

to accept or act in accordance with (a plan, principle, etc.). ?

adopt out, to place (a child) for adoption

The institution may keep a child or adopt it out.

verb

disown , leave alone , reject , repudiate , repulse

verb

accept , adapt , affiliate , affirm , appropriate , approve , assent , assume , borrow , embrace , endorse , espouse , follow , go down the line , go in for , imitate , maintain , mimic , opt , ratify , seize , select , support , take on , take over , take up , tap , use , utilize , choose , foster , naturalize , pick , raise , take in , pass , sanction , advocate , employ , enact , father , practice , receive , take