quarantined

1. 1
   adjective

   Kept in enforced isolation to prevent the spread of a contagious disease.

   The quarantined ship remained anchored offshore until the crew was cleared.

   Health officials delivered supplies to the quarantined neighborhood each day.

   Similarisolated, sequestered, segregated, confined

   Note

   Here the participle settles in front of a noun and describes a state: a quarantined ship, a quarantined neighborhood. It does not grade, because something either is quarantined or is not, so "more quarantined" is not idiomatic. When the sentence needs to say who imposed the isolation or for how long, the past-tense verb takes over: the ship was quarantined by port officials for a month.

2. 2
   verb

   Simple past tense and past participle of quarantine.

   Authorities quarantined the entire village after the outbreak.

   The infected crew members were quarantined for fourteen days.

   Note

   A past form that serves two different constructions. Used transitively, someone does the isolating, so the passive comes naturally: the crew were quarantined. Used intransitively, people isolate themselves and no object follows: we quarantined at home. The transitive use also stretches figuratively to anything cut off or restricted. Behind it all is a noun that first named a period of forty days.

   We quarantined at home for two weeks after the trip.

   The whole family quarantined together until their tests came back.

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