Derived from gnísta (“to scrub, to gnash”), akin to gniða (“to rub, to scrub”) and Norwegian gniste (“yelp, whimper, squeak”) and gnisning/gnissing ("friction", "dissension").
- (gnashing): gnastan
- (scream): gaul
- J.Fritzners ordbok over Det gamle norske sprog, dvs. norrøn ordbok ("J.Fritnzer's dictionary of the old Norwegian language, i.e. Old Norse dictionary"), on gnísting.