desipiens
From LSJ
ἢ λέγε τι σιγῆς κρεῖττον ἢ σιγὴν ἔχε → either say something better than silence or keep silence (Menander)
Latin > French (Gaffiot 2016)
dēsĭpĭēns,¹⁵ entis, p.-adj. de desipio ; desipiens arrogantia Cic. Nat. 2, 16, fol orgueil.
Latin > English
desipiens (gen.), desipientis ADJ :: stupid, witless, lacking intelligence; foolish, silly (L+S)
Latin > German (Georges)
dēsipiēns, entis, PAdi. (desipio), unsinnig (Ggstz. sapiens), Cic. de div. 2, 51 u.a.