gloomies
Preceded by the: gloom, despondency.
informal
The drear departing day, the coming night, / Increase the gloomies of the tempest's sound, / And damp the last faint hope those trembling souls had found.
Where it comes from
A fanciful plural of gloomy: gloomy + -ies (suffix forming plural nouns ending in y). Gloom is derived from Middle English *gloom, *glom, from Old English glōm (“gloaming, twilight; darkness”), ultimately from Proto-Indo-European *ǵʰley- (“to gleam, glow, shimmer”).
Adapted from the Wiktionary entry gloomies (CC BY-SA 4.0).