something (such as an opinion about a political or moral issue) that is used to make a judgment about whether someone or something is acceptableThe party is using attitudes about gun control as a litmus test for political candidates.
The party is using attitudes about gun control as a litmus test for political candidates.
acid test, litmuscross, crucible, fire, gauntlet(also gantlet), ordeal, trialbaptism, initiationchallenge, complication, difficulty, grief, grievance, hardship, rigor
in 1913
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