Norwegian Bokmål

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Etymology

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From frost +‎ sikker.

Adjective

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frostsikker (neuter singular frostsikkert, definite singular and plural frostsikre)

  1. frostproof

Norwegian Nynorsk

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Etymology

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From frost +‎ sikker.

Adjective

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frostsikker (neuter singular frostsikkert, definite singular and plural frostsikre)

  1. frostproof