neitunarháttur

Icelandic

Etymology

From neitun (“refusal, negation”) +‎ háttur (“mood, custom”).

Pronunciation

• IPA^(key): /ˈneiːtʏnarˌhauhtʏr/

Noun

Examples (logic: denial of consequent by denial of antecedent)
I always cry at weddings. I didn't cry. Therefore, I was not at a wedding.

neitunarháttur m (genitive singular neitunarháttar, nominative plural neitunarhættir)

1. (philosophy, logic) modus tollens; (a valid form of argument in which the consequent of a conditional proposition is denied, entailing the denial of the consequent):

   1. If P, then Q.

   2. Not Q.

   3. Therefore, not P.

Declension

declension of neitunarháttur

m-s3	singular		plural
	indefinite	definite	indefinite	definite
nominative	neitunarháttur	neitunarhátturinn	neitunarhættir	neitunarhættirnir
accusative	neitunarhátt	neitunarháttinn	neitunarhætti	neitunarhættina
dative	neitunarhætti	neitunarhættinum	neitunarháttum	neitunarháttunum
genitive	neitunarháttar	neitunarháttarins	neitunarhátta	neitunarháttanna

Related terms

• aðskilnaðarregla, aðskilnaðarháttur (modus ponens)