Word Study
explainer
CIDE DICTIONARY
explainer, n.
One who explains; an expounder or expositor; a commentator; an interpreter. [1913 Webster]
ROGET THESAURUS
explainer
Interpreter
N interpreter, expositor, expounder, exponent, explainer, demonstrator, scholiast, commentator, annotator, metaphrast, paraphrast, glossarist, prolocutor, spokesman, speaker, mouthpiece, dragoman, courier, valet de place, cicerone, showman, oneirocritic, (Edipus, oracle).For further exploring for "explainer" in Webster Dictionary Online