spiksäker

Swedish

spik (“completely (literally "nail")”) +‎ säker (“sure”)

spiksäker (not comparable)

(colloquial) absolutely sure
– Stängde vi av spisen? – Det gjorde vi. – Är du säker? – Spiksäker.
– Did we turn off the stove? – Yes, we did. – Are you sure? – Absolutely sure.

Inflection of spiksäker
Indefinite	Positive	Comparative	Superlative²
Common singular	spiksäker	—	—
Neuter singular	spiksäkert	—	—
Plural	spiksäkra	—	—
Masculine plural³	spiksäkre	—	—
Definite	Positive	Comparative	Superlative
Masculine singular¹	spiksäkre	—	—
All	spiksäkra	—	—
1) Only used, optionally, to refer to things whose natural gender is masculine. 2) The indefinite superlative forms are only used in the predicative. 3) Dated or archaic