Aetna is a large health insurance provider in the United States, and it has several competitors. Humana, with 6 letters, is one of the largest health insurance companies in the United States. Cigna, with 5 letters, is another major health insurance provider in the US. POLICY, with 6 letters, is an insurance POLICY that covers a variety of risks. Insurer, with 7 letters, is a company that provides insurance policies. INSURE, with 6 letters, is to provide insurance coverage for something. Insurers, with 8 letters, are companies that provide insurance policies. INS, with 3 letters, is a type of insurance POLICY. Etana, with 5 letters, is a health insurance provider. Elle, with 4 letters, is a health insurance provider.