hotliner

American  

[hot-lahy-ner] / ˈhɒtˌlaɪ nər /

noun

1. a person who speaks to callers on a telephone hotline.

2. Chiefly Canadian. Also hot-liner a radio broadcaster who accepts calls on the air from individuals using a telephone hotline set up for that purpose.

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Etymology

Origin of hotliner

First recorded in 1970–75; hotline + -er ¹