If something is tame, it cannot surprise or injure you. It’s predictable. Tame can be used as an adjective or verb. A circus lion is tame (adjective) because it’s been tamed (verb). A “lion-tamer” beat the wildness out of it.
Sometimes tame isn’t fun — and not just for the bears who ride bicycles under the Big Top. Tame isn’t appealing when you’re going on a rollercoaster or seeing a fireworks display. If a friend tells you a concert is tame, will you rush out for tickets? Tame, however, is not all bad. Some people take anger management courses to learn to “tame their tempers.” Others work to “tame their tongues” after hurting another person with a careless comment.