Ready to, on the verge of, as in I was about to leave when it began to rain, or He hasn't finished yet but he's about to. This usage was first recorded in Miles Coverdale's 1535 translation of the Bible (Joshua 18:8).
not about to. Having no intention of doing something, as in The shop steward was not about to cross the picket line, or Are you staying longer?—No, I'm not about to. [Colloquial; first half of 1900s]
Words nearby about to
How to use about to in a sentence
What 15 months in a federal correction institution will be like, according to a man who counsels to-be inmates.How a ‘Real Housewife’ Survives Prison: ‘I Don’t See [Teresa Giudice] Having a Cakewalk Here’|Michael Howard|January 6, 2015|DAILY BEAST
If the oft-talked-about college “hook-up culture” could be embodied by a place, it would be Shooters.Random Hook-Ups or Dry Spells: Why Millennials Flunk College Dating|Ellie Schaack|January 1, 2015|DAILY BEAST
That means the F-35 will be almost entirely reliant on long-range air-to-air missiles.
It will still carry a pair of Raytheon AIM-120 AMRAAM long-range air-to-air missiles and a pair of bombs.
The lack of a gun is not likely to be a major problem for close-in air-to-air dogfights against other jets.
Each day she resolved, "To-morrow I will tell Felipe;" and when to-morrow came, she put it off again.Ramona|Helen Hunt Jackson
All the operations of her brain related themselves somehow to to-morrow afternoon.Hilda Lessways|Arnold Bennett
"Buy something for your wife that-is-to-be," he said to his grand-nephew, as he handed him the folded paper.The Pit Town Coronet, Volume I (of 3)|Charles James Wills
Something remote and ancient stirred in her, something that was not of herself To-day, something half primitive, half barbaric.The Wave|Algernon Blackwood
To-day I'm more dead than alive, as we had a lesson from him yesterday that lasted four hours.Music-Study in Germany|Amy Fay