protective (adj.)

1660s, from protect + -ive. As a noun from 1875. Related: Protectively; protectiveness. Protective custody is from 1933, translating German Schutzhaft, used cynically by the Nazis.

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Definitions of protective from WordNet

protective (adj.)
(usually followed by `of') solicitously caring or mindful;
protective of his reputation
protective (adj.)
intended or adapted to afford protection of some kind;
the use of protective masks and equipment
a protective covering
kept the drunken sailor in protective custody
animals with protective coloring
protective tariffs
protective coatings
protective (adj.)
showing care;
a protective mother