mispromised

Verb

mispromise (third-person singular simple present mispromises, present participle mispromising, simple past and past participle mispromised)

1. To make a mispromise; to promise insincerely.
   • In your language be simple and clear as you can, Let no sort of deception e'er enter your plan; Never threaten with objects terrific and vain, Nor mislead or mispromise compliance to gain.1842, anonymous author, “Hints In Rhyme for the Nursery”, in The Servants' magazine, or Female domestics' instructor, page 117

See all 2 meanings of mispromise