gaudimonium

Latin

From gaudium (“joy, delight”) +‎ -mōnium (“collective or obligation”, perhaps used intensively).

gaudimōnium n (genitive gaudimōniī or gaudimōnī); second declension

joy
- c. 27 CE – 66 CE, Petronius, Satyricon 61:
  Niceros delectatus affabilitate amici: "Omne me, inquit, lucrum transeat, nisi iam dudum gaudimonio dissilio, quod te talem video. Itaque hilaria mera sint, etsi timeo istos scolasticos ne me rideant. Viderint: narrabo tamen, quid enim mihi aufert, qui ridet? satius est rideri quam derideri."
  Niceros was delighted by his friend's amiability and said, “May I never turn another penny if I am not ready to burst with joy at seeing you in such a good humour. Well, it shall be pure fun then, though I am afraid your clever friends will laugh at me. Still, let them; I will tell my story; what harm does a man's laugh do me? Being laughed at is more satisfactory than being sneered at.”

¹Found in older Latin (until the Augustan Age).

“gaudimonium”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
gaudimonium in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
gaudimonium in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.