AM and PM are associated with 12-hour timekeeping, as opposed to the international 24-hour clock. The 12-hour system grew up mainly in Northern Europe, and spread globally from there via the British Empire.
The adjective STRENUOUS has 2 senses: 1. characterized by or performed with much energy or force. 2. taxing to the utmost; testing powers of endurance. Familiarity information: STRENUOUS used as an adjective is rare.
A child's mood is capricious. The definition of capricious is someone or something that is subject to sudden, unpredictable changes. An example of capricious is someone who decides they don't want to go somewhere while already on the way. capricious. capricious.