For many Jordanians, an evening's entertainment is going out for a meal. Amman does have nightclubs in the modern districts, mostly attached to 5-star hotels. Many high-end hotels have popular bars. Some cinemas in Amman show English-language films, and there are cultural centres for concerts and exhibitions.
Outside the capital, nightlife is thinner on the ground. The Dead Sea resorts offer a variety of entertainment (not usually open to non-residents), as do the 5-star hotels in Wadi Mousa and Aqaba. In smaller towns, the local coffee shop sometimes doubles as a bar for locals. Men, or couples, may feel more comfortable here than solo women.
Pick up a copy of monthly entertainment listings publication W2Go, often available free from top-end hotels.