first officer: meaning, definition, pronunciation and examples
C1Technical / Professional
Quick answer
What does “first officer” mean?
The second-in-command of a ship or aircraft.
Audio
Pronunciation
Definition
Meaning and Definition
The second-in-command of a ship or aircraft; the deputy to the captain or commander.
In maritime and aviation contexts, the senior crew member ranking directly below the captain, responsible for navigation, operations, and assuming command if the captain is incapacitated. In police/security contexts, sometimes used to denote a senior-ranking officer.
Dialectal Variation
British vs American Usage
Differences
Usage is nearly identical in both maritime and aviation contexts. The term is standard internationally. In non-transport contexts (e.g., corporate titles), 'First Officer' is rare in both.
Connotations
Connotes professionalism, authority, and readiness to assume command. No significant UK/US connotative difference.
Frequency
Equally frequent in relevant professional contexts in both varieties. Uncommon in general everyday speech.
Grammar
How to Use “first officer” in a Sentence
[First Officer] + of + [Vehicle/Organization] (First Officer of the Voyager)[First Officer] + verb (reported, stated, took over)Captain + and + [First Officer]Vocabulary
Collocations
Examples
Examples of “first officer” in a Sentence
verb
British English
- [No standard verb form. Professional usage: 'He first-officered the Airbus for five years.']
American English
- [No standard verb form. Professional usage: 'She first-officered flights to Chicago.']
adverb
British English
- [No adverb form.]
American English
- [No adverb form.]
adjective
British English
- [No standard adjective form. Used attributively: 'first officer training', 'first officer duties'.]
American English
- [No standard adjective form. Used attributively: 'first officer position', 'first officer qualifications'.]
Usage
Meaning in Context
Business
Virtually unused in standard business, except metaphorically for a deputy CEO (rare).
Academic
Used in technical papers and case studies on aviation safety, maritime law, or crew resource management.
Everyday
Rare. Might be used when discussing someone's job: 'My brother is a first officer for an airline.'
Technical
Standard, precise term in aviation and maritime operations, regulations, and training manuals.
Vocabulary
Synonyms of “first officer”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “first officer”
- Using 'first officer' to mean any high-ranking officer (e.g., in a company or police force) – it's domain-specific.
- Confusing 'First Officer' with 'Pilot in Command' (the Captain).
- Misspelling as 'first-officer' (hyphen usually unnecessary).
FAQ
Frequently Asked Questions
In modern commercial aviation, yes, they are essentially synonyms. 'First Officer' is the formal title, while 'co-pilot' is a more general descriptive term. In maritime contexts, 'first officer' is used, not 'co-pilot'.
Absolutely. The term is gender-neutral. The role is defined by rank and responsibility, not gender.
The Captain has ultimate authority and responsibility for the vessel or aircraft and its occupants. The First Officer is the second-in-command, supports the Captain, and is qualified to assume command if necessary.
Not typically. The military uses ranks like 'Executive Officer' (XO) for a similar second-in-command role on ships. 'First Officer' is predominantly a civilian commercial and merchant shipping term.
The second-in-command of a ship or aircraft.
First officer is usually technical / professional in register.
First officer: in British English it is pronounced /ˌfɜːst ˈɒfɪsə(r)/, and in American English it is pronounced /ˌfɜːrst ˈɑːfɪsər/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[None directly. Related: 'Second in command', 'Right-hand man/woman'.]”
Learning
Memory Aids
Mnemonic
Think 'FIRST in line to take over.' The FIRST OFFICER is FIRST in rank after the captain.
Conceptual Metaphor
HIERARCHY IS A LADDER (the first officer is on the rung just below the captain).
Practice
Quiz
In which context is the term 'First Officer' MOST precisely and correctly used?