How should I describe something that will very likely happen right away? For example, would it be it correct to say, "It is about to rain"?
Certainly. You can say "It is about to rain" like you said. Depending on the context, you could also say:
It's probably going to rain soon.
Look at those clouds, it looks like rain.
It's going to rain.
(However, this question is a little vague. More detail about context would help.)
A single word would be :
Imminent : about to happen, occur, or take place very soon
His death is imminent
It is also correct the way you stated it, "It is about to..."
Just to make a distinction, "It is about to..." is best used for verbs, i.e. "rain", or "snow" or "melt". "It is about to melt."
"Imminent" is used with nouns e.g. "death", or "decision", or "arrival". "Uncle Fred's arrival is imminent."
One could say straightaway, e.g. "It will occur straightaway".
That usage is ironic, since it is not the term's original meaning. A straightaway was, still is, an uncurved racetrack.
protected by tchrist♦ Jan 7 '18 at 2:04
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