IN PROMPTU by Law Professor In readiness; at hand. In propria causa nemo judex. No one can be judge in his own cause. 12 Coke, 13. Related Posts:NEMO DEBET ESSE JUDEX IN PROPRIA CAUSAJUDEXALIQUID POSSESSIONS ET NIHIL JURISJUDEX NON POTEST ESSE TESTIS IN PROPIRA CAUSASUUS JUDEXNEMO JUDEX IN PARTE SUA