Vespertine, an adjective that describes something related to or occurring in the evening or just before bedtime, has some suitable synonyms to enhance one's vocabulary. Dusk, crepuscular, nocturnal, and twilight are some synonyms for this word. Twilight is associated with the time between day and night, exactly just before sunset, while dusk refers to later on when the sun has already disappeared. Nocturnal, on the other hand, is used to depict things that happen mostly at night. Crepuscular relates to or resembling twilight and has connotations of dimness or obscurity. Using these synonyms, one can express the specific mood or time of day they are referring to with more precision.