While an inquiry can be almost any search for truth, the related word inquisition suggests a long, thorough investigation that involves extensive and harsh questioning. Though the two words originally had about the same meaning, today inquisition tends to remind us of the Spanish Inquisition, an ongoing trial conducted by church-appointed inquisitors that began in the Middle Ages and sought out nonbelievers, Jews, and Muslims, thousands of whom were sentenced to torture and to burning at the stake.