The term 'strong longing' can be broken down into three words: YEN (3 letters), URGE (4 letters), and DESIRE (6 letters). YEN is a Japanese currency, and it can also refer to a strong DESIRE or craving for something. URGE is a strong feeling of wanting or needing to do something. Finally, DESIRE is a strong feeling of wanting something or wishing for something. All three words together can be used to describe a powerful and intense longing for something.