reckon on

verb — 2 senses

verb

To count on or depend (on).

To plan on; to expect.

I didn't reckon on him having a gun.
Three local yobs have also joined, but they have not reckoned on a redoubtable Conductor and two local revenue protection officers who soon escort them off the train!2022 November 2, Paul Bigland, “New trains, old trains, and splendid scenery”, in RAIL, number 969, page 57:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.