solid
High (A2/B1 core meaning, B2 extended meanings)Neutral to formal; common in technical, scientific, business, and everyday contexts.
Definition
Meaning
Firm, stable, and maintaining a fixed shape without a container; not liquid or gas.
Of good quality, reliable, or substantial; having three dimensions (length, width, height); unanimous or continuous.
Linguistics
Semantic Notes
The word bridges concrete physical properties (solid object) and abstract qualities (solid argument, solid reputation). It can describe materials, arguments, relationships, time periods, and geometric shapes.
Dialectal Variation
British vs American Usage
Differences
No major semantic differences. 'Solid' as a noun meaning 'food' (as opposed to liquid) is slightly more common in UK medical/nursing contexts ('on solids'). In geometry, 'solid' as a noun (three-dimensional shape) is universal.
Connotations
Both varieties strongly associate 'solid' with reliability and trustworthiness. In US business contexts, 'solid' can be a brief, positive assessment ('He's a solid performer').
Frequency
Equally frequent in both dialects. The collocation 'rock solid' is slightly more frequent in UK English.
Vocabulary
Collocations
Grammar
Valency Patterns
solid + noun (solid food)verb + solid (become solid)solid + with + noun (solid with ice)solid + on + topic (solid on the basics)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “rock solid (very reliable)”
- “solid as a rock”
- “a solid hour (a full, continuous hour)”
Usage
Context Usage
Business
Describes reliable performance, financial stability, or convincing plans (e.g., 'solid quarter', 'solid business case').
Academic
Describes robust research, convincing arguments, or three-dimensional shapes in mathematics/physics.
Everyday
Describes physical objects, reliable people, or continuous time periods (e.g., 'I slept for eight solid hours').
Technical
Refers to the state of matter, structural integrity, or three-dimensional geometry.
Examples
By Part of Speech
noun
British English
- The baby has started eating solids.
- Archimedes made important discoveries about solids and fluids.
- He carved the figure from a solid of mahogany.
American English
- After the surgery, she could only consume liquids, not solids.
- In geometry class, we calculated the volume of various solids.
- The sculpture was a single solid of bronze.
adverb
British English
- She was packed solid with appointments all week.
- The protesters stood solid against the proposed changes.
American English
- The theatre was booked solid for the entire run.
- The team played solid defense throughout the championship.
adjective
British English
- The ground was frozen solid after a week of frost.
- She gave a solid performance in her first leading role.
- We need a solid door here for better security.
- The committee reached a solid consensus.
American English
- The concrete needs 24 hours to dry solid.
- He's a solid candidate with excellent references.
- The table is made of solid oak.
- The team had solid support from the community.
Examples
By CEFR Level
- Water becomes solid when it freezes.
- This chair is very solid and strong.
- I ate some solid food for lunch.
- They built the house on a solid foundation of stone.
- He needed solid evidence to support his claim.
- After the flood, the ground was not solid enough to walk on.
- The two countries have maintained a solid alliance for decades.
- Her argument was logically solid and difficult to refute.
- He worked for twelve solid hours to finish the project on time.
- The merger is predicated on a solid analysis of market synergies.
- A solid grasp of statistics is fundamental to this research methodology.
- The vote demonstrated solid opposition to the bill, with only three dissenters.
Learning
Memory Aids
Mnemonic
Imagine a SOLDIER standing firm and immovable – a SOLID, reliable figure.
Conceptual Metaphor
RELIABILITY/TRUST IS SOLIDITY (a solid friend, a solid guarantee). CONTINUITY IS SOLIDITY (a solid line of succession, three solid days). QUALITY IS DENSITY (a solid piece of work).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid using 'solid' for 'durable' in all contexts (e.g., 'solid shoes' sounds odd; use 'sturdy' or 'durable'). The Russian 'солидный' often maps to 'respectable' or 'impressive' rather than the physical 'solid'.
Common Mistakes
- Using 'solid' to mean only 'hard' (ice is solid but not necessarily hard). Confusing 'solid' with 'sturdy' (furniture is sturdy, not solid, unless made from one block). Overusing 'solid' as a vague positive adjective.
Practice
Quiz
In which sentence is 'solid' used in a primarily metaphorical sense?
FAQ
Frequently Asked Questions
Yes, 'solid colour' means a uniform colour without patterns or gradients (e.g., 'a solid blue shirt').
'Solid' refers to the state of matter (not liquid/gas). 'Hard' refers to firmness/resistance to pressure. A sponge is solid but not hard; butter can be hard but not solid if it's melting.
Yes, it's an idiomatic use meaning a reliable, dependable friend.
It means an unbroken, continuous line, as opposed to a dashed or dotted line.