Closed door is the prime antonym for the word "opened door". An opened door is an entry point or passage that allows anyone to access a place. On the other hand, when a door is closed, it restricts entry into that specific area. The opposite of an open door is a closed one, which is a common antonym anyone can think of. However, other antonyms for an opened door include sealed, shut, locked, bolted, and fastened. An opened door represents a wide range of opportunities, choices, and options, while a closed door represents limitations, restrictions, and hurdles. In conclusion, opened and closed doors are perfect antonyms that portray various symbolic meanings.