The term "turned key" refers to the act of unlocking something using a key. The antonyms for this phrase can be described as locked, sealed, or closed. These terms signify that something is not accessible or available for use. For instance, if a door is locked, it means it cannot be opened without a key. Similarly, a sealed container cannot be accessed without breaking the seal. The opposite of "turned key" can also be interpreted as blocked, shut, or obstructed, which means that something is preventing access to the desired area. In summary, the antonyms for "turned key" refer to a situation in which an object or area is inaccessible, closed, or impenetrable.