now (at the present time): I’m not hungry now.
currently formal (now): The area is currently unoccupied.
at the moment (now): It’s not raining at the moment.
right now (at the present moment): I’m sorry, but he is in a meeting right now.
at present formal (now): We have no plans to do that at present.
presently US formal (at the present time): These islands are presently uninhabited.
at this juncture spoken formal (at this time; now): There are important matters that I would like to discuss at this juncture.
at once (immediately; now): They are leaving for Madrid at once.
