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adjective
experimental
Synonyms: balloon, exploratory, pilot, preliminary, probationary, provisional, tentative, test, testing
Antonyms: definite, known, proven
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noun
test
Synonyms: analysis, assay, attempt, audition, check, crack, dry run, effort, endeavor, essay, examination, experience, experiment, experimentation, fling, go, hassle, investigation, lick, probation, proof, R and D, research and development, shakedown, shot, showcase, stab, striving, struggle, testing, test run, trial and error, trial run, try, try on, tryout, undertaking, venture, whack, workout
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noun
legal proceeding
Synonyms: action, arraignment, case, citation, claim, contest, counterclaim, court action, court martial, cross-examination, habeas corpus, hearing, impeachment, indictment, lawsuit, litigation, prosecution, rap, seizure, suit, tribunal
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noun
trouble, big problem
Synonyms: adversity, affliction, albatross, anguish, annoyance, bane, blow, bother, burden, calvary, care, complication, cross to bear, crucible, difficulty, distress, drag, grief, hardship, hard time, hassle, heartbreak, inconvenience, irritation, load, misery, misfortune, nightmare, nuisance, ordeal, pain, pain in the neck, pest, plague, rigor, severe test, sorrow, suffering, thorn, tribulation, trying time, unhappiness, vexation, vicissitude, visitation, woe, wretchedness
Antonyms: happiness, peace