The government ordered a countrywide lockdown that included halting all flights and road travel as a prophylactic measure to prevent the spread of coronavirus.

In some cases, mastectomy is prophylactic surgery - a preventive measure taken by those considered to be at high risk of breast cancer.

Your game is harmonious when each move is connected to another, in a logical sequence, either with the idea of improving your position or, prophylactically, avoiding the realization of an idea of your opponent.