solid

Adjective

solid (comparative more solid or solider, superlative most solid or solidest)

1. That can be picked up or held, having a texture, and usually firm. Unlike a liquid, gas or plasma.
   • Almost all metals are solid at room temperature.
2. Appreciably large in size, quantity, or value.
   • Almost a quarter of a million copies is really a solid number for today's record industry. In fact, that number is more than the last two number one albums2015 July 8, “Rapper Meek Mill Charts His First Number One Album”, in Forbes
   • Americans increased their borrowing by a solid amount in September. But the gain was less than half the big August surge2018 November 7, “Consumer borrowing up solid $10.9 billion in September”, in Journal Record

   Synonyms:

   substantial, considerable

3. Lacking holes, hollows or admixtures of other materials.
   • solid gold
   • solid chocolate
4. Strong or unyielding.
   • a solid foundation
   • As in the 1-0 win against Norway in Oslo, this was an England performance built on the foundations of solid defence and tactical discipline.2012 June 2, Phil McNulty, “England 1-0 Belgium”, in BBC Sport
5. Continuous and heavy.
   • He was covered in a fine mist by then, the night skies growing more saturated by the hour. It would be a nice, solid rain before long, he figured.2011 April 1, J.N. Duncan, Deadworld, Kensington Publishing Corp., →ISBN
   • The ground above looked like it might give out again in a solid rain. The opposite bank promised even less. The river bent around acres of mud pocked with knots of grass and cattail spikes. I was tired. Despite the dangers of camping on such unstable ground, I dragged the canoe up the bank[…]2015 May 1, Patrick Dobson, Canoeing the Great Plains: A Missouri River Summer, U of Nebraska Press, →ISBN, page 128
6. (slang) Excellent, of high quality, or reliable.
   • That's a solid plan.
   • Radiohead's on tour! Have you heard their latest album yet? It's quite solid.
7. Hearty; filling.
   • a solid meal
8. Worthy of credit, trust, or esteem; substantial; not frivolous or fallacious.
   • the solid purpose of a sincere and virtuous answer1670, John Milton, “(please specify the page)”, in The History of Britain, that Part Especially now Call’d England. […], London: […] J[ohn] M[acock] for James Allestry, […] , →OCLC
   • Theſe are they, who wanting Wit, affect Gravity, and go by the name of Solid men: and a ſolid man is, in plain English, a ſolid, ſolemn Fool.1675, John Dryden, “To the Right Honourable, John, Earl of Mulgrave, […]”, in Aureng-zebe: A Tragedy. […], London: […] T[homas] N[ewcomb] for Henry Herringman, […], published 1676, →OCLC
9. Financially well off; wealthy.
10. Sound; not weak.
    • a solid constitution of body
11. Written as one word, without spaces or hyphens.
    • American English writes many words as solid that British English hyphenates.

    Synonyms:

    closed, closed up

12. (dated) Not having the lines separated by leads; not open.

Adverb

solid (comparative more solid, superlative most solid)

1. Solidly.
   • True, not ten of these mines were yielding rock worth hauling to a mill, but everybody said, "Wait till the shaft gets down where the ledge comes in solid, and then you will see!"1870–1871 (date written), Mark Twain [pseudonym; Samuel Langhorne Clemens], chapter XLIV, in Roughing It, Hartford, Conn.: American Publishing Company [et al.], published 1872, →OCLC, page 306
   • Hm-m-—These papers are complete—They make Mortimer and Matilda the legal guardians of Babs—ought to put me in more solid than ever with Miss Effie—and that home is good graft.1937 March 7, Marsh, “Dan Dunn-Secret Operative 48”, in Sarasota (FL) Herald-Tribune
2. (not comparable) Without spaces or hyphens.
   • Many long-established compounds are set solid.

Noun (1)

solid (plural solids)

1. A substance in the fundamental state of matter that retains its size and shape without need of a container (as opposed to a liquid or gas).
2. A three-dimensional figure (as opposed to a surface, an area, or a curve).
3. (informal) A favor.
   • Please do me a solid: lend me your car for one week.
   • I owe him; he did me a solid last year.
4. An article of clothing which is of a single color throughout.
   • I prefer solids over paisleys.
5. (in plural) Food which is not liquid-based.
   • The doctor said I can't eat any solids four hours before the operation.

Noun (2) capitalized: SOLID

US/ˈsɑlɪd/UK/ˈsɒlɪd/

SOLID (uncountable)

1. (abbreviation, acronym, object-oriented programming) Acronym of single responsibility, open-closed, Liskov substitution, interface segregation and dependency inversion, a set of design principles promoting maintainability and extensibility.