- subscriber, endorser, indorser, ratifier - someone who expresses strong approval
--1 is a kind of supporter, protagonist, champion, admirer, booster, friend
Derived form: verb subscribe3 - subscriber, reader - someone who contracts to receive and pay for a certain number of issues of a publication
--2 is a kind of customer, client
Derived form: verb subscribe5 - subscriber, contributor - someone who contributes (or promises to contribute) a sum of money
--3 is a kind of donor, giver, presenter
Derived form: verb subscribe4