What is a word for the prefix fasten?

There isn't a single word that directly translates to "fasten" as a prefix. The meaning of "fasten" is generally incorporated into the words it's attached to.

However, depending on the specific context, you might consider these words or prefixes with similar meanings:

* Attach: This is a broad term that encompasses the concept of fastening.

* Secure: Implies a strong and reliable connection.

* Fix: Similar to "fasten," suggesting making something stable or permanent.

* Affix: Specifically refers to attaching something to a surface.

* Bind: Suggests a connection that restricts movement.

Example:

Instead of saying "fasten the lid," you could say:

* "Attach the lid"

* "Secure the lid"

* "Fix the lid"

* "Affix the lid"

* "Bind the lid"

The best word will depend on the specific context and the desired level of formality.