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Definition of Caller-up
1. Noun. The person initiating a telephone call. "There were so many callers that he finally disconnected the telephone"
Exact synonyms: Caller, Phoner, Telephoner
Generic synonyms: Speaker, Talker, Utterer, Verbaliser, Verbalizer
Derivative terms: Call, Phone, Telephone
Generic synonyms: Speaker, Talker, Utterer, Verbaliser, Verbalizer
Derivative terms: Call, Phone, Telephone