Definitions

rainbow

[reyn-boh] / ˈreɪnˌboʊ /

NOUN

color spectrum

Synonyms

STRONG

arc bow crescent curve prism variegation

WEAK

band of color

Frequently Asked Questions

What is another name for rainbow?

Literally speaking, a rainbow is an arc (bow) of colors that appears in the sky due to rays of sunshine being reflected and refracted by raindrops (or other water droplets). The word rainbow is also commonly used to refer to any artistic representations of this. Technically speaking, a rainbow can be classified as a primary rainbow or a secondary rainbow. Together, they can form a double rainbow. Triple rainbows are very rare. Rainbow is also commonly used as an adjective that means containing all or many colors of the spectrum (the main ones being red, orange, yellow, green, blue, indigo, and violet—aka roygbiv). Synonyms of this sense include multicolored (or multicolor), kaleidoscopic, and prismatic. Kaleidoscopic suggests something full of bright colors in a way that’s reminiscent of the images seen when looking through a kaleidoscope. Prismatic is a reference to the rainbow-colored when light shines through a prism. Extended from this is a more general sense of rainbow that’s applied to anything featuring a diverse collection of people or things, as in rainbow coalition. Rainbows and rainbow flags are popularly used as symbols of the LGBTQ+ community.

What is another way to say sunshine and rainbows?

Sunshine and rainbows is an idiom used to refer a situation that’s completely positive in all aspects. The phrase is most often used in negative constructions to imply that such situations are rare or impossible (and that it’s naive to think that they’re not), as in Marriage is not all sunshine and rainbows. Phrases used to mean the same thing often use some of the same terms in varying combinations: sunshine and lollipops, unicorns and rainbows, sunshine and puppies. The phrase peaches and cream can mean the same thing, but it’s more often used in positive constructions. The phrase sweetness and light is somewhat similar, but it’s usually applied to people, as opposed to situations. Singles words that can mean the same thing are rosy and rose-colored.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Raman, sporting a Japanese Dodgers hat and a rainbow City Council fanny pack, joined campaign staff for drinks at tables covered in “Nithya Raman for Mayor” pins.

From Los Angeles Times • May 31, 2026

The internet boom and the rise of trendy handheld devices and gadgets that came in a rainbow array of colorways feels like eons ago now.

From Salon • May 30, 2026

One spot placed a rainbow Star of David behind Singer, calling him a "major pro-gay, pro-trans activist".

From BBC • May 18, 2026

This process creates a spectrum, which is similar to a rainbow that reveals how light is distributed across different wavelengths.

From Science Daily • May 5, 2026

A bright rainbow rose up toward the evening sky into an arch, traveled across the sky, and landed somewhere far away.

From "Healer of the Water Monster" by Brian Young

Vocabulary lists containing rainbow

National Cookie Day

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rainbow

Frequently Asked Questions

Example Sentences

Related Words

Vocabulary lists containing rainbow

National Cookie Day