n. 25B6; adverb
I'm extremely busy now : AT THE MOMENT, at present, at the present (time/moment), at this moment in time, currently; N. Amer. presently; Brit. informal at the minute.
television is now the main source of news : NOWADAYS, today, these days, in this day and age; in the present climate.
you must leave now : AT ONCE, straight away, right away, right now, this minute, this instant, immediately, instantly, directly, without further ado, promptly, without delay, as soon as possible; informal pronto, straight off, a.s.a.p.
25A0; as of now FROM THIS TIME ON, from now on, henceforth, henceforward, from this day forward, in future; formal hereafter.
25A0; for now FOR THE TIME BEING, for the moment, for the present, for the meantime; archaic for the nonce.
25A0; not now LATER (ON), sometime, one day, some day, one of these days, sooner or later, in due course, by and by, eventually, ultimately.
25A0; now and again OCCASIONALLY, now and then, from time to time, sometimes, every so often, (every) now and again, at times, on occasion(s), (every) once in a while; periodically, once in a blue moon.