The term 'found out' can be expressed in a variety of ways. The five crossword solutions for this term are 'HEARD' (5 letters), 'uncovered' (9 letters), 'learnt' (6 letters), 'DISCOVERED' (10 letters), and 'LEARNED' (7 letters). All of these words refer to the act of obtaining knowledge or information through observation, investigation, or inquiry. 'HEARD' implies that the knowledge was obtained through listening, while 'uncovered' suggests that the knowledge was revealed through uncovering something hidden. 'Learnt' and 'LEARNED' both refer to the process of gaining knowledge through study or experience. Finally, 'detected' implies that the knowledge was obtained through careful observation or examination.