logophile
noun

- a lover of words

(Oxford Dictionary)

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ORIGIN

Word-endings (suffixes) with the common part -phil- (-phile, -philia, -phily, -philic) derived from the ancient Greek word philia (φιλία) meaning love and affection, are used to specify some kind of attraction or affinity to something.

Compare this to word-endings with the common part -phob- (-phobia, -phobic) from Greek φόβος phobos meaning fear.

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SYNONYMS
describing a person with an affiinity for something

addict, adherent, admirer, aficionado, believer, buff, devotee, disciple, enthusiast, fan, fanatic, follower, freak, groupie, junkie, lover, supporter, fancier, fiend, nut, zealot

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Practice OWAD in a conversation:

"From the sophistication of Jim's writing, I suspect that he's a bit of a LOGOPHILE."