Solid

From Old French solide (as an adjective), from Latin solidus ("solid").

Full definition of solid

1905, w, w:The Case of Miss Elliott Chapter 2, The cane was undoubtedly of foreign make, for it had a solid silver ferrule at one end, which was not English hallâ€“marked.

2012, June 2, Phil McNulty, England 1-0 Belgium, 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.

(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.I don't think Dave would have done that. He's a solid dude.
Hearty; filling.a solid meal
Worthy of credit, trust, or esteem; substantial; not frivolous or fallacious.

Miltonthe solid purpose of a sincere and virtuous answer
DrydenThese, wanting wit, affect gravity, and go by the name of solid men.
J. A. SymondsThe genius of the Italians wrought by solid toil what the myth-making imagination of the Germans had projected in a poem.

Sound; not weakly.a solid constitution of body
(typography) Written as one word, without spaces or hyphens.American English writes many words as solid that British English hyphenates.
(printing, dated) Not having the lines separated by leads; not open.
(US, politics, slang) United; without division; unanimous.The delegation is solid for a candidate.
Of a single color throughout.John painted the walls solid white.He wore a solid shirt with floral pants.
(dated) Having all the geometrical dimensions; cubic.A solid foot contains 1,728 solid inches.

(plural solids)

(chemistry) 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).
(geometry) A three-dimensional figure (as opposed to a surface, an area, or a curve).
(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.
An article of clothing which is of a single color throughout.I prefer solids over paisleys.
(in the plural) Food which is not liquid-based.The doctor said I can't eat any solids four hours before the operation.

Roughing It
1943
Dodger Rebellion Is Settled With One Dramatic Flourish, set a new high in baseball for the year, not only ending speculation as to when Durocher would be fired but putting him in more solid than ever before.
Wodehouse Offing|XVI|She was telling Bobbie about the time when Boko Fittleworth was trying to ingratiate himself with your Uncle Percy, and you very sportingly offered to go and call your Uncle Percy a lot of offensive names, so that Boko, hovering outside the door, could come in and stick up for him, thus putting himself in solid with him.

(not comparable, typography) Without spaces or hyphens.Many long-established compounds are set solid.