at hand, threatening, around the corner, close at hand, in no time (at all), at the earliest/first opportunity, soon, in the short run/term, upcoming, close, just, momentary, pending, any day/moment etc. now, shortly
approaching (part of speech: verb)
future (part of speech: adjective)
ensuing (part of speech: verb)
- He had scant taste for the impending interview and would have gladly avoided it if such a thing had been possible. - "Left Guard Gilbert", Ralph Henry Barbour.
- The sky was black, and a shower was impending. - "The Vultures", Henry Seton Merriman.
- Yet was this dashed- dashed by an impending parting. - "The Sign of the Spider", Bertram Mitford.