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Added 4 October 2026

solid

/ˈsɒl.ɪd/ adjective

In Latin: solidus Wiktionary

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about solid at Wordnik → Where our words come from →

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.
Appreciably large in size, quantity, or value.
Lacking holes, hollows or admixtures of other materials.
solid gold

adverb

Solidly.
Without spaces or hyphens.
Many long-established compounds are set solid.

noun

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).
A three-dimensional figure (as opposed to a surface, an area, or a curve).
A favor.
Please do me a solid: lend me your car for one week.

Origin

From Middle English solide, borrowed from Old French solide, from Latin solidus (“solid”), from Proto-Indo-European *solh₂-i-dʰ-o-s (“entire”), suffixed form of root *solh₂- (“integrate, whole”). Doublet of sol, sold, soldo, solidus, sou, and xu.

From Wiktionary, via Kaikki.org (CC BY-SA)

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