Chambers 1908 has two slightly strange noun senses: (i) "a waiter's answer to a call" (isn't that an interjection?); (ii) "the position of a soldier's weapon after the order 'Make ready!'". Probably not worth inclusion? Equinox ◑ 18:38, 27 December 2018 (UTC)
make (oneself or something) ready (for someone or something) Gentlemen, make ready for our immediate departure!
We do have make sure. --Backinstadiums (talk) 16:16, 24 August 2020 (UTC)
In law, this set phrase traditionally refers to a prospective buyer of property who can legally and financially consummate the deal. A less common variant is ready, able, and willing --Backinstadiums (talk) 10:31, 18 April 2021 (UTC)
a tree that was ready to fall. --Backinstadiums (talk) 17:05, 24 August 2021 (UTC)