A word that someone who doesn't know how to spell would use when they are trying to use the word reckon.
For Example, when trying to use the popular phrase: "a force to be reckoned with" they would say: "Don't listen to Bob he realizes we are an impossible force to wrecken with and realizes his only hope for survival is to get us against eachother.
Classy? Not in the least. Shame on you bob."