contraposition

• POS: Noun
• HYPHEN: con=tra=po=si=tion

CIDE DICTIONARY

contraposition, n. [Pref. contra- + position: cf. f. conterposition.].

•  A placing over against; opposite position.  F. Potter.  [1913 Webster]
•  A so-called immediate inference which consists in denying the original subject of the contradictory predicate; e. g.: Every S is P; therefore, no Not-P is S.  [1913 Webster]

OXFORD DICTIONARY

contraposition, n.
1 opposition or contrast.
2 Logic conversion of a proposition from all A is B to all not-B is not-A.

Derivative

contrapositive adj. & n.

Etymology

LL contrapositio (as CONTRA-, ponere posit- place)

THESAURUS

contraposition

antagonism, antipathy, antithesis, backlash, bucking, challenge, clashing, collision, con, conflict, confrontation, confutation, contention, contradiction, contradistinction, contraindication, contrariety, contrast, contravention, contraversion, counteraction, counterposition, counterworking, crankiness, cross-purposes, crosscurrent, crossing, crotchetiness, denial, disagreement, discrepancy, dissent, friction, head wind, hostility, impugnation, impugnment, inconsistency, inimicalness, interference, kick, negation, nonconformity, opposing, oppositeness, opposition, opposure, oppugnance, oppugnancy, oppugnation, perverseness, perversity, polarity, reaction, rebutment, rebuttal, recalcitrance, recoil, refusal, rejection, renitency, repercussion, repugnance, resistance, revolt, showdown, standing against, swimming upstream, traversal, undercurrent

ROGET THESAURUS

contraposition

Inversion

N inversion, eversion, subversion, reversion, retroversion, introversion, contraposition, contrariety, reversal, turn of the tide, overturn, somersault, somerset, summerset, culbute, revulsion, pirouette, transposition, transposal, anastrophy, metastasis, hyperbaton, anastrophe, hysteron proteron, hypallage, synchysis, tmesis, parenthesis, metathesis, palindrome, pronation and supination, inverted, wrong side out, wrong side up, inside out, upside down, bottom upwards, keel upwards, supine, on one's head, topsy-turvy, sens dessus dessous, inverse, reverse, opposite, top heavy, inversely, hirdy-girdy, heels over head, head over heels.

Contraposition

N contraposition, opposition, polarity, inversion, opposite side, reverse, inverse, counterpart, antipodes, opposite poles, North and South, antonym, opposite (contrariety), opposite, reverse, inverse, converse, antipodal, subcontrary, fronting, facing, diametrically opposite, Northern, septentrional, Boreal, arctic, Southern, Austral, antarctic, over, over the way, over against, against, face to face, vis-a- vis, as poles asunder.