Synonyms are like spices: used in moderation, they enhance the taste; used without moderation, they obscure every flavour. Linguistic gustation differentiates between them under the titles synonymia and tautology. Though, of course, pleasurable variety for one reader is overabundance for another.
Let’s have a saucy example.
“She’s an Encyclopaedia, that woman.”
“Of all the vices, ancient and modern, and very interesting to riffle through.” He started stoking up the fire. “There’s everything in that woman, of the ghoul, the lamia, the Greek courtesan, the Barbarian queen, the low prostitute, the great lady of Rome, with something very partial, very gripping, very corruption of the fin-de-siècle, very Baudlerian, if I might put it like that: a slightly funereal seasoning of lust and quasi-Christian resignation; she’s as subject, a case-study. …”
“For the Salpêtrière, eh—let’s say the word. Another neurotic.”
—Jean Lorrain in The Unknown Woman (translation by Brian Stableford)
How’s that on the digestion?
Lorrain specialises in psychological studies of moral decadence—and there is a separate post on his prose—but for now it suffices to note that to some people the quote may appear overdone. And that’s despite me having spared you the accompanying references to Pasiphae and the bull, Messalina’s promiscuity, and Cleopatra in general.
(Writing tip: Observe that Lorrain prepares the reader for the word-train by having his characters be aware of the upcoming speech figure: they call the woman an encyclopaedia. Clever. It helps believability.)