Les Misérables vocabulary

the old doctor reminded him that the future remained uncertain; history proved that epidemics have a way of recrudescing when least expected.

Albert Camus. The Plague (Stuart Gilbert translation) (1948)

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Will there be a recrudescence of old obsolete war? 

Jack London. A Collection of Stories

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An old man, widower, unkempt of hair, in bed, with head covered, sighing: an infirm dog, Athos: aconite, resorted to by increasing doses of grains and scruples as a palliative of recrudescent neuralgia: the face in death of a septuagenarian, suicide by poison.

James Joyce. Ulysses

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in each Moreau had blended this animal with that. One perhaps was ursine chiefly, another feline chiefly, another bovine chiefly; but each was tainted with other creatures,—a kind of generalised animalism appearing through the specific dispositions. And the dwindling shreds of the humanity still startled me every now and then,—a momentary recrudescence of speech perhaps, an unexpected dexterity of the fore-feet, a pitiful attempt to walk erect.

H. G. Wells. The Island of Doctor Moreau