insomnietas
From LSJ
Ubi idem et maximus et honestissimus amor est, aliquando praestat morte jungi, quam vita distrahi → Where indeed the greatest and most honourable love exists, it is much better to be joined by death, than separated by life.
Latin > English (Lewis & Short)
insomnĭĕtas: ātis, f. id., for insomnia,
I sleeplessness (late Lat.), Theod. Prisc. 2, 1; Plin. Val. 1, 35.