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 tests, litmusescrosses, crucibles, fires, gauntlets(also gantlets), ordeals, trialsbaptisms, initiationschallenges, complications, difficulties, griefs, grievances, hardships, rigors
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