What are other ways to spell rainbow?

There aren't really any "other ways" to spell rainbow in English. It's a standard word with a consistent spelling.

However, here are some fun variations or related terms you might be interested in:

* Rainbow's: This is the plural form, referring to multiple rainbows.

* Rainbowed: This is the past tense of the verb "to rainbow," meaning to be filled with the colors of a rainbow.

* Rainbows: This is an informal, poetic way to refer to the plural of rainbow.

* Rain-bow: This is an archaic spelling of the word, used in older literature.

* Arc-en-ciel: This is the French word for rainbow.

Let me know if you have any other word-related questions!