Meaning & use
quickly
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Meanings
adverbcomparable
At high speed; with rapid movement or action.
Grammar: Modifies verbs; the standard comparative is more quickly, though quicker is common informally.
Patterns
- move quickly
- quickly became
- as quickly as possible
She walked quickly to catch the bus.
The room quickly became crowded when the concert started.
adverbcomparable
Without delay; promptly or soon.
Grammar: Focuses on promptness rather than physical speed: reply quickly, quickly realized.
Patterns
- respond quickly
- quickly realize
- reply quickly
The landlord responded quickly to our heating problem.
I quickly realized I had boarded the wrong train.
Word forms
| comparative | more quickly |
|---|---|
| superlative | most quickly |
Common combinations
- as quickly as possible
- Please send the signed form as quickly as possible.
- respond quickly
- She responded quickly to my email about the schedule change.
- quickly realize
- We quickly realized the map was upside down.
- quickly become
- The small argument quickly became a serious disagreement.
Synonyms and how they differ
- rapidly
- Rapidly stresses speed of change or movement; quickly also covers promptness of response.
- swiftly
- Swiftly suggests smooth, efficient speed and sounds slightly literary.
- promptly
- Promptly means without delay and fits the sense of acting soon rather than fast.
- fast
- Fast works as adverb and adjective and is more informal; use quickly in careful writing.
Opposites
Word family
Commonly confused: quickly or fast?
quickly vs fast
Fast works both as an adjective (a fast train) and an adverb (run fast); quickly is only an adverb, and quick used as an adverb is informal.
Practice
The doctor promised to see us as ___ as possible.
Choose one answer.
After as...as modifying the verb see, a plain adverb is required: as quickly as possible. 'Quick' is an adjective (informally an adverb), while 'quicker' and 'quickest' are comparative forms that do not fit the as...as structure.
Make it your own
Write a sentence using “quickly”, then check it and compare it with the examples above.