The term 'OPENED' can be used to describe a variety of actions, such as 'STARTED' (7 letters), 'ADMITTED' (8 letters), 'BEGUN' (5 letters), 'LED' (3 letters), 'UNDID' (5 letters), 'LEDOFF' (6 letters), 'UNCLOSED' (8 letters), 'UNSEALED' (8 letters), and 'PREMIERED' (9 letters). All of these words refer to the act of opening something, whether it is a door, a box, or a performance. 'UNSEALED' and 'UNCLOSED' are particularly related to the idea of breaking a seal or unlocking a lock, while 'PREMIERED' implies the first public showing of a performance.