The crossword solution for the term 'HOW FATHER KNOWS' is BEST, which is a four letter word. BEST stands for 'Better Education and Skills Training', which is an organization that provides educational and vocational training to help people gain the skills they need to succeed in their chosen career paths. BEST works with employers to ensure that their employees have the necessary skills to perform their jobs effectively. They also provide support to those who are looking to start their own businesses.