These four words are degree adverbs used to modify adjectives or adverbs. They tell us how much of a quality is present (intensity). Although they look similar, they differ in meaning, register (formal/informal), and collocation.
They usually come before an adjective or another adverb: a fairly good result, rather expensive.
Meaning: 'quite' can mean 'completely' with non-gradable adjectives (British) or 'fairly' with gradable ones; 'pretty' is informal and strong; 'rather' is more formal and can show surprise; 'fairly' means moderately.
Context and the adjective type (gradable vs non-gradable) change the exact meaning. Pay attention to tone (formal vs informal).
Table
Degree Adverbs: meaning and examples
Adverb
Typical meaning / register
Example
quite
Can mean 'completely' with non-gradable adjectives (BrE); 'fairly' with gradable adjectives. Neutral to formal.
The task is quite impossible without more data.
pretty
Informal; means 'fairly' but stronger and casual.
The report is pretty detailed, but needs minor edits.
rather
More formal; often expresses surprise or that something is more than expected.
The client was rather pleased with the quick turnaround.
fairly
Neutral, modest degree — means 'moderately'. Good for formal reports.
The results are fairly consistent across all departments.
Tip
Placement rule: where to put these adverbs
These degree adverbs normally go before adjectives or before other adverbs. With the verb 'be', they come after it.
Before adjectives: a rather difficult task, fairly expensive.
Before adverbs: quite clearly, pretty quickly.
After 'be': The manager is quite satisfied.
Think: adjective/adverb → adverb before; with BE → adverb after.
Example
Examples in context
The quarterly review was fairly positive, but we need to improve margins.
She was rather surprised by the client's last-minute request.
The prototype is quite successful for an early version.
He's pretty experienced in supply-chain negotiations.
Tip
Common mistakes
Learners often confuse nuance and register. Watch these traps:
Using 'pretty' in formal writing (avoid in reports and emails).
Assuming 'quite' always means 'very' — with non-gradable adjectives it can mean 'completely' in British English.
Placing the adverb in the wrong position (e.g., after an adjective: 'expensive fairly' is incorrect).
Using 'rather' to mean 'fairly' in all contexts — it often carries surprise or a negative tone.
Check the level of formality and whether the adjective is gradable before choosing the adverb.
Quiz
Choose the best option to complete the sentence:
"The interim results were _____ encouraging, but further tests are needed."
Hint: Choose a neutral adverb suitable for a business report.
Correct!
'Fairly' fits a formal business context and means moderately encouraging. 'Pretty' is informal; 'rather' can imply surprise; 'quite' could be ambiguous.
Incorrect
The correct answer was: fairly
'Fairly' fits a formal business context and means moderately encouraging. 'Pretty' is informal; 'rather' can imply surprise; 'quite' could be ambiguous.
Quiz
Complete: The budget shortfall makes the project _____ to finish on time.
Hint: Is 'impossible' something that can vary in degree, or is it absolute?
Correct!
'Quite' + 'impossible' here means 'completely impossible' — 'impossible' is a non-gradable adjective, so 'quite' expresses totality.
Incorrect
The correct answer was: quite impossible
'Quite' + 'impossible' here means 'completely impossible' — 'impossible' is a non-gradable adjective, so 'quite' expresses totality.
Quiz
Which sentence is most appropriate for a formal report?
Hint: Pick the option that sounds neutral and suitable for formal written English.
Correct!
'Fairly' is neutral and appropriate for formal writing. 'Pretty' is informal, 'rather' can suggest surprise or slight unexpectedness, and 'quite' can be ambiguous.
Incorrect
The correct answer was: The customer was fairly happy with the quick fix.
'Fairly' is neutral and appropriate for formal writing. 'Pretty' is informal, 'rather' can suggest surprise or slight unexpectedness, and 'quite' can be ambiguous.
Key Points
Vocabulary
quite
adverbCEFR B2//kwaɪt//
to a significant extent; with non-gradable adjectives can mean 'completely' (BrE)
The software is quite stable for a beta version.
Vocabulary
pretty
adverbCEFR B1//ˈprɪti//
informal: fairly or to a notable extent
She is pretty confident about the negotiation.
Vocabulary
rather
adverbCEFR B2//ˈrɑːðər//
to a certain degree, often more formal; can show surprise or unexpectedness
We were rather impressed by the speed of delivery.
Vocabulary
fairly
adverbCEFR B2//ˈfeəli//
to a moderate degree; neutral and suitable for formal contexts
The system is fairly reliable during peak hours.
GrammarPoint
gradable adjective
grammar_pointCEFR B2//ˈɡreɪdəbl ˌædʒɛktɪv//
an adjective that can vary in intensity and take modifiers (e.g., 'pretty big', 'very small')
Expensive is gradable: fairly expensive, very expensive.
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