Deep cuts and choice selections from my private word-horde. (If you haven’t read, I recommend Nabokov’s Ada or Ardor):
Acarprous (adj) Botanical; not producing fruit; sterile; barren. From the Ancient Greek ἄκαρπος (ákarpos, "fruitless"), from privative ἀ- (a-) + καρπός (karpós, "fruit").
Borborygmic (n) A rumbling noise produced by the movement of gas through the intestines. From Latin borborigmus, from Ancient Greek βορβορυγμός (borborugmós), of onomatopoeic origin.
Clepsydra (n) an ancient time-measuring device worked by a flow of water. From Latin clepsydra, from Ancient Greek κλεψύδρα (klepsúdra, literally "water thief").
Cornute (adj) having or resembling cornua; hornlike: the cornute process of a bone. something forked or having horns; a dilemma, especially, a sophistical dilemma. From Late Latin cornutus.
Detumify (v) to drain of the swollen essence; to remove engorgement. First attested 1725, from French tumescence, from Latin tumescēns ("swelling"), present participle of tumēscō ("I begin to swell"), from tumeō ("I swell") + -ēscō ("I become") (English -esce, in this form -escence),[1] stem from Proto-Indo-European *tum-éh₁- ("to be swelling"), stative stem of *tum- ("to swell").
Floriferous (adj) Botanical; producing many flowers. From Latin florifer (from flos, flor- ‘flower’, + -fer ‘producing’) + -ous.
Horripilation (n) The erection of hairs on the skin due to cold, fear, or excitement. Mid 17th century: from late Latin horripilatio(n- ), from Latin horrere ‘stand on end’ + pilus ‘hair’.
Ichneumon (n) A genus of wasps. In medieval literature, the ichneumon or echinemon was the enemy of the dragon. When it sees a dragon, the ichneumon covers itself with mud, and closing its nostrils with its tail, attacks and kills the dragon. From Latin ichneumōn, from Ancient Greek ἰχνεύμων (ikhneúmōn, "tracker"), from ἴχνος (íkhnos, "track, footstep").
Licentia vatum (n) Poetic license. From the Latin.
Moresque (adj) Moorish in style or design. Late Middle English (as a noun denoting arabesque ornament): from Italian moresco, from Moro ‘Moor’.
Naric (adj) relating to the nares or nostrils. Late 17th century: from Latin naris ‘nostril, nose’.
Oneirotically (adv) erotic, as in dreams. From Ancient Greek ὄνειρος (óneiros, "dream") + French érotique, from Ancient Greek ἐρωτικός (erōtikós, "related to love"), from ἔρως (érōs, "sexual love").
Paragoge (n) the addition of a sound to the end of a word, as in "amongst." From Late Latin paragoge, from Ancient Greek παραγωγή (paragōgḗ, "derivation, addition").
Plangently (adj) cf. the Latin verb plangere, which has two meanings. The first of those meanings, "to strike or beat," was sometimes used by Latin speakers in reference to striking one's breast in grief. This, in turn, led to the verb's second meaning: "to lament." From Latin plangēns, present participle of plangō ("I beat; I lament").
Spoliation (v) the action of ruining or destroying something. The action of taking goods or property from somewhere by illegal or unethical means. Late Middle English (denoting pillaging): from Latin spoliatio(n- ), from the verb spoliare ‘strip, deprive.’
Syncope (n) 1. Temporary loss of consciousness caused by a fall in blood pressure; fainting. 2. The omission of sounds or letters from within a word, e.g., when probably is pronounced "probly." Late Latin syncope, from Ancient Greek συγκοπή (sunkopḗ), from συγκόπτω (sunkóptō, "cut up") + -η (-ē, "nominalization suffix"), from σύν (sún, "beside, with") + κόπτω (kóptō, "strike, cut off").
Tumulous (adj) having mounds; full of mounds; tumular. From Latin tumulōsus ("full of hills or hillocks, hilly"), tumulus ("mound, hill, hillock") + -ōsus, from tumeō ("I swell").
Usufruct (n) the right to enjoy the use and advantages of another's property short of the destruction or waste of its substance. Early 17th century: from medieval Latin usufructus, from Latin usus (et) fructus ‘use (and) enjoyment’, from usus ‘a use’ + fructus ‘fruit’.