adjoin
C1Formal, Academic, Technical
Definition
Meaning
to be next to and connected or sharing a boundary with something.
To attach or join directly; to be adjacent or contiguous.
Linguistics
Semantic Notes
Implies physical proximity and direct connection, often without overlap. Common in mathematical, legal, architectural, and geographical contexts.
Dialectal Variation
British vs American Usage
Differences
Usage is largely identical. Slightly more common in formal/technical writing than casual speech in both regions.
Connotations
Neutral, descriptive. Slightly technical or formal tone.
Frequency
Low frequency in everyday conversation; moderate in academic/technical prose.
Vocabulary
Collocations
Grammar
Valency Patterns
N adjoins NN and N adjoinN be adjoined to N (by N)adjoining NVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[no common idioms]”
Usage
Context Usage
Business
Rare, except in property/real estate contexts: 'The warehouse adjoins the main distribution centre.'
Academic
Common in geography, mathematics (adjoining sets/angles), and law: 'The two properties have adjoining rights of way.'
Everyday
Uncommon; 'next to' or 'connected to' are preferred: 'Our garden is next to theirs.'
Technical
Precise term in geometry, land survey, architecture: 'The two parcels of land adjoin at the creek.'
Examples
By Part of Speech
verb
British English
- The playing field adjoins the school grounds.
- The lease covers the flat and the adjoining storage room.
American English
- Our property adjoins the national forest.
- The hotel room adjoined a private balcony.
adverb
British English
- [Rare/obsolete; no modern standard example]
American English
- [Rare/obsolete; no modern standard example]
adjective
British English
- We booked two adjoining rooms with a connecting door.
- The dispute concerned the adjoining wall.
American English
- They bought adjoining lots to build a larger home.
- The report included maps of the adjoining counties.
Examples
By CEFR Level
- The kitchen adjoins the dining room.
- Our hotel rooms were adjoining.
- The two gardens adjoin at the old stone wall.
- France adjoins several European countries.
- The theorem applies to adjoinable topological spaces.
- The land adjoins a protected conservation area, affecting its value.
Learning
Memory Aids
Mnemonic
Think of ADJOIN as ADD + JOIN. You ADD something by JOINING it directly NEXT TO something else.
Conceptual Metaphor
SPACE IS CONNECTION (Physical adjacency is conceptualized as a form of attachment).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Not 'примыкать' in all senses; often more specific than соседствовать. 'Adjoin' emphasizes shared boundary, not just proximity. Avoid confusing with 'adjacent' (adjacent is the adjective).
Common Mistakes
- Using 'adjoin' as a synonym for 'meet' in non-physical contexts (e.g., *'Our ideas adjoin'). Confusing with 'adjourn' (to suspend a meeting).
Practice
Quiz
In which context is 'adjoin' MOST appropriately used?
FAQ
Frequently Asked Questions
No, it's a formal or technical word (C1 level). In everyday speech, people use 'next to', 'connected to', or 'attached to'.
'Adjoin' is a verb meaning 'to be next to and sharing a boundary'. 'Adjacent' is an adjective meaning 'next to or near something else'. A room can *adjoin* another, or be *adjacent to* it.
Rarely and only in very formal or technical writing (e.g., 'adjoining concepts in philosophy'). Typically, it describes physical spaces or areas.
The related noun is 'adjunction' (formal/technical, e.g., in mathematics or logic), but 'junction' or 'connection' is more common. The state of adjoining is 'adjacency'.
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