Emily Dickinson Lexicon

IN-CON-SIST'ENCE, or IN-CON-SIST'EN-CY, n. [in and consistence.]

1. Such opposition or disagreement as that one proposition infers the negation of the other; such contrariety between things that both can not subsist together. There is a perfect inconsistency between that which is of debt and that which is of free gift. Smith.
2. Absurdity in argument or narration; argument or narrative where one part destroys the other; self-contradiction. Johnson.
3. Incongruity; want of agreement or uniformity; as, the inconsistency of a man with himself.
4. Unsteadiness; changeableness.