rainbow
C1 (Common, but metaphoric uses are more frequent at higher levels)Neutral; appropriate in formal, informal, literary, and scientific contexts depending on usage.
Definition
Meaning
A multicolored arc visible in the sky when sunlight is refracted and reflected through raindrops.
A symbol of hope, diversity, promise, or something encompassing a wide variety of elements, often used metaphorically to represent LGBTQ+ pride.
Linguistics
Semantic Notes
The term can refer literally to the meteorological phenomenon or be used metaphorically. As a modifier (e.g., 'rainbow coalition'), it suggests inclusivity of diverse groups.
Dialectal Variation
British vs American Usage
Differences
Minimal. Both use the literal and metaphorical senses identically. Spelling is the same.
Connotations
In both varieties, the primary connotations are positive: hope, beauty, promise. The LGBTQ+ pride association is equally strong.
Frequency
Comparably frequent. The phrase 'chasing rainbows' (pursuing unrealistic goals) is slightly more common in UK English.
Vocabulary
Collocations
Grammar
Valency Patterns
[There] + be + a rainbowA rainbow + appear/formedVerb + a rainbow (see/spot/chase)Modifier + rainbow (bright/double/pride)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “chase rainbows”
- “at the end of the rainbow”
- “over the rainbow”
Usage
Context Usage
Business
Rare, except in metaphorical brand names (Rainbow Technologies) or in 'rainbow portfolio' meaning a diversified investment mix.
Academic
Used in physics/meteorology for the optical phenomenon; in social sciences for 'rainbow nation' (post-apartheid South Africa) or diversity studies.
Everyday
Common for describing the weather phenomenon or as a symbol of hope/LGBTQ+ pride.
Technical
In optics: 'rainbow angle', 'primary/secondary rainbow'. In computing: 'rainbow table' (cryptography).
Examples
By Part of Speech
verb
British English
- The light rainbow'd across the misty moor.
- (Rare/poetic)
American English
- The spray from the waterfall rainbow'd in the afternoon sun.
- (Rare/poetic)
adverb
British English
- The lights shone rainbow-bright through the crystal.
- (Highly rare/creative)
American English
- The fish scales glittered rainbow-like in the sun.
- (Highly rare/creative)
adjective
British English
- She wore a rainbow scarf to the festival.
- They formed a rainbow alliance of several political parties.
American English
- The room was decorated with rainbow streamers.
- The school promotes a rainbow curriculum inclusive of all families.
Examples
By CEFR Level
- Look! There's a rainbow in the sky.
- The rainbow has many colours.
- After the storm, a beautiful rainbow appeared over the hills.
- The children tried to find the end of the rainbow.
- The politician spoke about building a rainbow coalition to address the country's issues.
- The experiment demonstrated how a prism can create a rainbow spectrum.
- Her latest novel explores the rainbow of human emotions with remarkable subtlety.
- The conference aimed to foster a rainbow of perspectives within the tech industry.
Learning
Memory Aids
Mnemonic
RAIN + BOW: Imagine a colourful BOW (ribbon) that appears in the sky after RAIN.
Conceptual Metaphor
HOPE/ PROMISE IS A RAINBOW (e.g., 'a rainbow of possibilities'); DIVERSITY IS A RAINBOW (e.g., 'rainbow nation').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'дождевой лук' (nonsensical). Correct is 'радуга'. The structure 'rain' + 'bow' is not decomposable in Russian.
Common Mistakes
- Using 'in the rainbow' instead of 'in the sky' (A rainbow appeared *in the sky*).
- Misspelling as 'rainbow' or 'rainbow'.
- Using plural 'rainbows' unnaturally when speaking generally.
Practice
Quiz
In which context is 'rainbow' used metaphorically to represent financial diversification?
FAQ
Frequently Asked Questions
Primarily, yes. It is a countable noun. Use as an adjective ('rainbow flag') is very common. Use as a verb or adverb is rare and poetic.
A 'rainbow' is the specific visible arc in the sky. A 'spectrum' is the scientific concept of light separated into its constituent colours, which can be produced by a prism or other means, not necessarily in an arc shape.
Yes, but it's less common. You would use it when referring to multiple distinct events: 'We saw three rainbows in one week.' The singular is often used in general statements: 'A rainbow is a beautiful sight.'
The multicoloured flag, designed by Gilbert Baker in 1978, uses the rainbow as a symbol of the diversity and unity of the LGBTQ+ community. Each colour was originally assigned a meaning (e.g., life, healing, sunlight).
Collections
Part of a collection
Weather
A2 · 45 words · Describing the weather, climate and seasons.