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 (masculine, based on háttur)

	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”)