extempore

noun 0.799

impromptu

noun 0.591

obiter

noun 0.536

res gestae

noun 0.528

temporary

noun 0.524

pro forma

noun 0.523

spur of the moment

noun 0.517

interlocutory

noun 0.514

motu proprio

noun 0.506

interim

noun 0.504

de facto

noun 0.503

terminus ante quem

noun 0.501