The phrase "night-mantled" refers to something covered or wrapped in darkness, typically alluding to the nighttime. Synonyms for this term include "twilight-draped," "dusk-covered," and "shadow-veiled." These words all convey a sense of gloom and obscurity, as if shrouded in a veil of the unknown. Other synonyms may include "moonlit," "star-studded," or "midnight-shrouded." These alternatives all reflect the mood and atmosphere of the evening or nighttime, evoking a sense of mystery and enchantment that can be both eerie and alluring. Overall, the synonyms for "night-mantled" capture the essence of the darkness and the hidden beauty that can be found within it.