single file: meaning, definition, pronunciation and examples
B2Neutral
Quick answer
What does “single file” mean?
A line of people or things arranged one behind another.
Audio
Pronunciation
Definition
Meaning and Definition
A line of people or things arranged one behind another.
A mode of movement or arrangement where entities follow one after another in a line, often due to limited space, or a way of organizing data or objects sequentially.
Dialectal Variation
British vs American Usage
Differences
No significant semantic difference. Slight preference for 'in single file' (more common overall) vs. 'single-file' as a hyphenated adjectival/adverbial form, which is equally understood.
Connotations
Identical in both dialects. Connotes orderly, linear progression, often in confined spaces (corridors, paths).
Frequency
Comparable frequency; common in instructional, descriptive, and organizational contexts.
Grammar
How to Use “single file” in a Sentence
[Verb] + in + single filein + single filesingle-file (hyphenated adjectival/adverbial form)Vocabulary
Collocations
Examples
Examples of “single file” in a Sentence
verb
British English
- The teacher asked the children to single-file through the doorway.
American English
- The hikers will need to single-file along the narrow ridge.
adverb
British English
- Please walk single file along the corridor.
- The ants moved single file towards the food.
American English
- We had to go single-file through the cave.
- The students entered the room single file.
adjective
British English
- They maintained a single-file formation throughout the march.
American English
- The trail is only wide enough for single-file traffic.
Usage
Meaning in Context
Business
Rare. Could describe orderly queuing for an event or sequential processing of documents.
Academic
Used in descriptions of animal behaviour, military history, or crowd management studies.
Everyday
Common for describing how people walk on a narrow path, queue, or enter a room.
Technical
Used in hiking/mountaineering instructions, fire drill procedures, and data transmission (e.g., 'single-file database').
Vocabulary
Synonyms of “single file”
Strong
Neutral
Weak
Vocabulary
Antonyms of “single file”
Watch out
Common Mistakes When Using “single file”
- Using 'in a single file' (the article 'a' is usually omitted: 'in single file').
- Confusing 'single file' with 'one file' in computing contexts.
- Using it as a verb without the preposition 'in' (e.g., 'They single filed' is non-standard).
FAQ
Frequently Asked Questions
It is standardly written as two separate words when used as a noun phrase ('walk in single file'). It can be hyphenated as 'single-file' when used as an adjective or adverb ('single-file line', 'walk single-file').
Not in standard, formal English. The verb form 'to single-file' is sometimes seen in informal or instructional contexts but is considered non-standard by many dictionaries. The preferred construction is to use a verb (walk, move, proceed) with the adverbial phrase 'in single file' or 'single-file'.
They are largely synonymous, but 'in single file' strongly emphasizes the constraint of one person/thing directly behind another, often due to limited width. 'In a line' can be more general and might allow for people to be side-by-side within that line.
'Indian file' is an older, now dated and potentially offensive term meaning the same as 'single file'. It is derived from a stereotypical observation of some Indigenous peoples' marching order. Its use is discouraged, and 'single file' is the modern, neutral term.
A line of people or things arranged one behind another.
Single file is usually neutral in register.
Single file: in British English it is pronounced /ˌsɪŋɡl ˈfaɪl/, and in American English it is pronounced /ˌsɪŋɡl ˈfaɪl/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Get your ducks in a row (related concept of orderly arrangement)”
Learning
Memory Aids
Mnemonic
Imagine a SINGLE sewing needle threading through a long, straight FILE folder. One needle, one file = single file.
Conceptual Metaphor
MOVEMENT IS A LINE; ORDER IS LINEARITY.
Practice
Quiz
Which of the following is the most common and natural usage of 'single file'?