Synonyms:
* Grasped: This is a very common synonym, implying a firm hold.
* Held: This is a more general term, not necessarily indicating a strong grip.
* Gripped: Similar to grasped, but suggesting even stronger pressure.
* Clenched: This implies a tight, almost painful hold.
* Embraced: This implies a loving or affectionate hold.
* Joined: This emphasizes the act of bringing things together.
Antonyms:
* Unclasped: This is the direct opposite of clasped.
* Opened: This suggests a separation of things that were previously joined.
* Released: This implies letting go of something that was held.
* Loose: This describes something that is not held tightly.
* Unconnected: This emphasizes that things are not joined together.
The best synonym or antonym will depend on the specific context in which "clasped" is used.