Principle of contradiction
(Logic),
the axiom or law of thought that a thing cannot be and not be at
the same time, or a thing must either be or not be, or the same attribute can not at the same time be
affirmed and and denied of the same subject. It develops itself in three specific forms which have been
called the "Three Logical Axioms." First, "A is A." Second, "A is not Not-A" Third, "Everything is either A
or Not-A."
Contradictional
(Con`tra*dic"tion*al) a. Contradictory; inconsistent; opposing. [R.] Milton.
Contradictious
(Con`tra*dic"tious) a.
1. Filled with contradictions; inconsistent. [Obs.]
2. Inclined to contradict or cavil [Obs.] Sharp.
— Con`tra*dic"tious*ness, n. Norris.
Contradictive
(Con`tra*dict"ive) a. Contradictory; inconsistent. — Con`tra*dict"ive*ly, adv.
Contradictor
(Con`tra*dict"or) n. [L.] A contradicter.
Contradictorily
(Con`tra*dict"o*ri*ly) adv. In a contradictory manner. Sharp.
Contradictoriness
(Con"tra*dict`o*ri*ness), n. The quality of being contradictory; opposition; inconsistency.
J. Whitaker.
Contradictory
(Con`tra*dict"o*ry) a. [LL. contradictorius: cf. F. contradictoire.]
1. Affirming the contrary; implying a denial of what has been asserted; also, mutually contradicting; inconsistent.
"Contradictory assertions." South.
2. Opposing or opposed; repugnant.
Schemes . . . contradictory to common sense.
Addisn.
Contradictory
(Con`tra*dict"o*ry), n.; pl. Contradictories
1. A proposition or thing which denies or opposes another; contrariety.
It is common with princes to will contradictories.
Bacon.
2. pl. (Logic) propositions with the same terms, but opposed to each other both in quality and quantity.
Contradistinct
(Con`tra*dis*tinct") a. Distinguished by opposite qualities. J. Goodwin.
Contradistinction
(Con`tra*dis*tinc"tion) n. Distinction by contrast.
That there are such things as sins of infirmity in contradistinction to those of presumption is not to be
questioned.
South.
Contradistinctive
(Con`tra*dis*tinc"tive) a. having the quality of contradistinction; distinguishing by contrast.
— Con`tra*dis*tinc"tive, n.
Contradistinguish
(Con`tra*dis*tin"guish) v. t. [imp. & p. p. Contradistinguished (#); p. pr. & vb. n.
Contradistinguishing.] To distinguish by a contrast of opposite qualities.
These are our complex ideas of soul and body, as contradistinguished.
Locke.