litmus test
📖 Definitions
noun
1. A test in which a single indicator prompts the decision.
2. A test to determine if a solution is acidic or alkaline.
💬 Usage Examples
“People are always saying you need to take a vacation with someone before you can really determine whether the relationship has any longevity. They are wrong. ... No, dear readers, shopping at Costco is the relationship litmus test.” Ammi Midstokke; Couple Survives Costco Ordeal; Spokesman Review (Washington); Feb 3, 2022. “Niobe was not a metaphor for a litmus test, she was a litmus test.
Straight men turned colors in her presence.” Larry Beinhart; The Librarian; PublicAffairs; 2004.