1. to engage in an unspecified activity
2. used to emphasize a lack of restriction in referring to anything or amount, no matter what.
“whatevering is running a marathon, running a 5k, running farther than you did yesterday. Doing yoga, lifting weights, doing pilates. Eating well or eating too much. Getting big or trimming down. Getting in beach shape or getting in gamer shape. Working late, or sneaking out early. Having a coffee or having a cocktail. Skiing, snowboarding, skating, or surfing. Anything and everything – or nothing at all.”