* Simple: As dusk settled, the birds began to sing their evening songs.
* Descriptive: The sky painted itself with hues of orange and purple as dusk approached.
* Figurative: The city lights twinkled like fireflies against the backdrop of dusk.
* Action: We hurried home as dusk fell, eager to warm ourselves by the fire.
* Emotional: A sense of melancholy washed over me as I watched the sun sink below the horizon, marking the arrival of dusk.
Which one best suits your needs depends on the context you're writing in!