{"era":"current","word":"viper","meaning":"A venomous snake in the viper family, or figuratively a treacherous person.","children":[{"era":"1200s","word":"vipere","meaning":"viper","children":[{"era":"pre-1100","word":"vipre","meaning":"viper","children":[{"era":"classical","word":"vīpera","meaning":"viper","children":[{"era":"classical","word":"vīvipara","meaning":"live-bearing","children":[{"era":"classical","word":"vīvus + parere","meaning":"alive + to bear","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Latin"}],"language":"Old French"}],"language":"Middle French"}],"language":"Modern English"}