viðvörunar
Viðvörunar is the genitive singular form of the Icelandic noun viðvörun, which means warning or caution. In Icelandic grammar, many nouns ending in -un are feminine, and the genitive singular form commonly ends in -unar, yielding viðvörunar. The form is not a standalone lexical item but a grammatical form used within phrases to indicate “of warning” or to build compounds describing warning-related concepts.
Usage and function: Viðvörunar serves to relate warnings to another noun in a phrase or to form
Common compounds and examples (illustrative): viðvörunarmerki (warning sign), viðvörunartexti (warning text), viðvörunarmerking (warning label). These compounds
Etymology: Viðvörun denotes the act or instance of warning, and the -ar ending in the genitive singular
See also: viðvörun, warning, safety labeling, warning signs, Icelandic grammar.