reduction to the absurd A disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction.
synoniem: reductio.
Roget 479:
confutation,
refutation;
answer,
complete answer;
disproof,
conviction,
redargution†,
invalidation;
exposure,
exposition;
clincher;
retort;
reductio ad absurdum;
knock down argument,
tu quoque argument [Lat.];
sockdolager [U.S.],
correction
etc.
572.1;
dissuasion
etc.
616.
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Roget 476:
reasoning ratiocination rationalism;
dialectics,
induction,
generalization.
discussion,
comment;
ventilation;
inquiry
etc.
461.
argumentation,
controversy,
debate;
polemics,
wrangling;
contention
etc.
720;
logomachy†;
disputation,
disceptation†;
paper war.
art of reasoning,
logic.
process of reasoning,
train of reasoning,
chain of reasoning;
deduction,
induction,
abduction;
synthesis,
analysis.
argument;
case,
plaidoyer†,
opening;
lemma,
proposition,
terms,
premises,
postulate,
data,
starting point,
principle;
inference
etc.
(judgment)
480.
prosyllogism†,
syllogism;
enthymeme†,
sorites†,
dilemma,
perilepsis†,
a priori reasoning,
reductio ad absurdum,
horns of a dilemma,
argumentum ad hominem [Lat.],
comprehensive argument;
empirema†,
epagoge†.
[person who reasons]
reasoner,
logician,
dialectician;
disputant;
controversialist,
controvertist†;
wrangler,
arguer,
debater polemic,
casuist,
rationalist;
scientist;
eristic†.
logical sequence;
good case;
correct just reasoning,
sound reasoning,
valid reasoning,
cogent reasoning,
logical reasoning,
forcible reasoning,
persuasive reasoning,
persuasory reasoning†,
consectary reasoning†,
conclusive
etc.
478;
subtle reasoning;
force of argument,
strong point,
strong argument,
persuasive argument.
arguments,
reasons,
pros and cons.
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