What is a homonym for when?

There is no perfect homonym for "when" because it's a unique word with a distinct meaning and pronunciation. However, depending on the context, you might consider using these words, which share some similarities:

* Then - This word is often used in place of "when" to indicate a specific point in time, especially in the past. For example, "I went to the store then" could mean "I went to the store at that time."

* Than - This word is used for comparison and is not a direct synonym for "when." However, in certain contexts, "than" might be used instead of "when" to convey a sense of contrast or comparison. For example, "I prefer to go to the store now than later" could be rephrased as "I prefer to go to the store now rather than when it's later."

It's important to note that these words are not true homonyms of "when" as they have different meanings and pronunciations.

Ultimately, the best word to use will depend on the specific context and the intended meaning.