IdiomDaily LifePolish

papierek lakmusowy

Meaning: A decisive test that reveals the true nature or quality of something.

Literally: Litmus paper

Example: “Pierwsza zima będzie papierkiem lakmusowym dla nowego dachu.” — The first winter will be the acid test for the new roof.

English equivalent: Acid test

Equivalents in other languages

Origin: From chemistry: litmus paper, dyed with a colorant extracted from lichens, turns red in acid and blue in alkali, giving an instant and unmistakable result. In Polish, as with English "litmus test," papierek lakmusowy is any test that reveals the true nature of something or someone at once.

More Polish idioms

Explore another collection: Compliments & Insults

Compliments and insults from around the world, from the sweet to the savage.

Browse all compliments & insults →

Keep exploring

Explore all idioms →