n. 25B6; noun
the trial is expected to last several weeks : COURT CASE, case, lawsuit, suit, hearing, inquiry, tribunal, litigation, (legal/judicial) proceedings, legal action; court martial; appeal, retrial.
the drug is undergoing clinical trials : TEST, try-out, experiment, pilot study; examination, check, assessment, evaluation, appraisal; trial/test period, trial/test run, dummy run; informal dry run.
she could be a bit of a trial at times : NUISANCE, pest, bother, irritant, problem, inconvenience, plague, thorn in one's flesh, the bane of one's life, one's cross to bear; bore; informal pain, pain in the neck/backside, headache, drag, nightmare; Scottish informal skelf; N. Amer. informal pain in the butt, nudnik, burr under/in someone's saddle.
a long account of her trials and tribulations : TROUBLE, anxiety, worry, burden, affliction, ordeal, tribulation, adversity, hardship, tragedy, trauma, reverse, setback, difficulty, problem, misfortune, bad luck, mishap, misadventure; informal hassle; poetic/literary travails.
25B6; adjective a three-month trial period : TEST, experimental, pilot, exploratory, probationary, provisional.
25B6; verb the electronic cash card has been trialled by several banks : TEST, try out, put to the test, put through its paces; pilot.