The phrase "happiest country" refers to a nation where people are generally content, satisfied, and experience a high level of well-being and happiness in their lives. Full definition
It's no wonder why it was voted the most sustainably happy country in the world. (rpmvacationrentals.com)
But there was no doubt that the quality of donated blood was far higher than that of the blood sold to clinics in less happy countries. (firstthings.com)
Citizens of happy countries have higher suicide rates than citizens of unhappy countries, because they look at the smiling faces around them and the contrast is too great. (slaw.ca)