Reader

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Old English rǣdere ‘interpreter of dreams, reader’.

wiktionary

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From Middle English reder, redar, redere, redare, from Old English rēdere, rǣdere(“a reader; scholar; diviner”), from Proto-West Germanic *rādāri, equivalent to read +‎ -er. Cognate with Saterland Frisian Räider(“advisor”), Dutch rader(“advisor”), German Rater(“advisor”).

etymonline

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reader (n.)

Old English rædere "one who counsels; person who reads aloud to others; lector; scholar; diviner, interpreter," agent noun from rædan (see read (v.)) in its various senses. Compare Dutch rader "adviser," Old High German ratari "counselor." The Old English fem. form was rædistre. Meaning "a reading book for schools" is by 1789.