i Register
In some senses, deliquium is marked as figuratively, literary, rare. Watch for register when choosing this word.
noun
Liquefaction through absorption of moisture from the air.
An abrupt loss of consciousness usually caused by an insufficient blood flow to the brain; fainting.
If he be locked in a close room, he is afraid of being stifled for want of air, and still carries biscuit, aquavitæ, or some strong waters about him, for fear of deliquiums, or being sick […]
A languid, maudlin mood.
An abrupt absence of sunlight, e.g. caused by an eclipse.