high seas
C1Formal, Legal, Nautical, Literary, Journalistic
Definition
Meaning
The parts of the ocean that are not under the jurisdiction of any single country; international waters.
Used metaphorically to describe any unregulated, chaotic, or lawless environment, often in the context of digital space (e.g., 'the high seas of the internet').
Linguistics
Semantic Notes
Always used in the plural form 'high seas'. Implies distance from shore, freedom from national control, and often a sense of inherent danger or lawlessness. The term is a fossilised plural.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Both use the term identically in legal, nautical, and general contexts.
Connotations
Same connotations of freedom, danger, and lawlessness in both varieties.
Frequency
Equally infrequent in everyday speech in both varieties, but standard in specific domains.
Vocabulary
Collocations
Grammar
Valency Patterns
on the high seasfreedom of the high seasthe high seas of [metaphorical domain]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “the law of the high seas”
- “a high seas adventure”
Usage
Context Usage
Business
Used in shipping, logistics, and insurance (e.g., 'liability for accidents on the high seas').
Academic
Used in international law, maritime history, and political science texts.
Everyday
Rare. May appear in news about piracy, naval incidents, or metaphorically.
Technical
A precise legal term defined by the United Nations Convention on the Law of the Sea (UNCLOS).
Examples
By Part of Speech
verb
British English
- The treaty governs how nations may high-seas fish in the region.
- They were accused of attempting to high-seas the vessel.
American English
- The act prohibits companies from high-seas drilling without permits.
- Legislation was passed to high-seas the exploration rights.
adverb
British English
- The ship was captured high-seas.
- They operated high-seas, beyond any authority.
American English
- The incident occurred high-seas, in international waters.
- The vessel was travelling high-seas.
adjective
British English
- The high-seas fleet conducted manoeuvres.
- They faced a high-seas tribunal.
American English
- High-seas piracy remains a threat.
- The high-seas rescue operation was successful.
Examples
By CEFR Level
- Pirates sometimes attack ships on the high seas.
- The navy patrols the high seas to keep them safe.
- The new law aims to reduce pollution on the high seas.
- Freedom of navigation on the high seas is a key principle of international law.
- The controversial fishing practices on the high seas have sparked a diplomatic dispute.
- Modern cybersecurity is often described as a battle on the digital high seas, with little regulation.
Learning
Memory Aids
Mnemonic
Think of 'high' not as altitude, but as 'main' or 'principal' (like 'high street'). The 'high seas' are the main, open ocean, far from any coast.
Conceptual Metaphor
THE OCEAN IS A WILD, LAWLESS FRONTIER; FREEDOM IS OPEN WATER.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation as 'высокие моря'. The correct equivalent is 'открытое море' or, in legal contexts, 'международные воды'.
Common Mistakes
- Using it in singular form ('high sea').
- Confusing it with 'heavy seas' (stormy weather at sea).
Practice
Quiz
In which of the following contexts is the term 'high seas' used literally and correctly?
FAQ
Frequently Asked Questions
It is grammatically plural ('the high seas are...'), though it refers to a singular concept. It is never used as 'a high sea' in this sense.
'Open sea' is a general geographical term for waters far from land. 'High seas' is the specific legal term for those parts of the ocean not under any state's sovereignty.
Yes, it's common to use it metaphorically for any unregulated area, e.g., 'the high seas of online commerce' or 'the high seas of scientific innovation'.
No. Historically, 'high' meant 'main' or 'principal' (as in 'highway' or 'high street'). The 'high seas' are the main, open ocean.