- Logic. a proposition so related to a second that it is impossible for both to be true or both to be false.
Origin of contradictory
SynonymsSee more synonyms for contradictory on Thesaurus.com
Examples from the Web for contradictorily
Her clothes conceal and reveal, artfully and contradictorily and endlessly.I, Mary MacLane
But motion at one time, and rest at another time, are not contradictorily opposed to each other.
This principle is that, of every two contradictorily opposed predicates, only one can belong to a conception.
And deep in her repentant heart she was contradictorily glad that Evelina and the baby were safe together down in the Cove.His "Day In Court"
Charles Egbert Craddock (AKA Mary Noailles Murfree)
But many of the details are vaguely and contradictorily stated.
- logic a statement that cannot be true when a given statement is true or false when it is false
Word Origin and History for contradictorily
1530s, "mutually opposed, at variance," from Late Latin contradictorius "containing a contradiction or objection," from contradictus, past participle of contradicere (see contradiction). Meaning "fond of contradicting" is from 1891. Used earlier as a noun (late 14c.).