Lucid
adjective /ˈluː.sɪd/ — Expressed clearly; easily understood
Definition
Expressed clearly and easy to understand — or of a person, thinking and speaking clearly without confusion. Also used for the brief moments of clarity that interrupt delirium or confusion.
Beyond the definition
The gift of clarity in any form. A lucid explanation, a lucid dream, a lucid moment in illness — all share the quality of light reaching where it usually doesn't.
Origin & history
From Latin 'lucidus' (full of light, clear, bright) — from 'lux' (light). Lucidity is literally being full of light — the quality that lets you see clearly because there is enough light to see by.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
Her analysis was lucid — the kind of explanation that makes a complicated thing feel obvious, without simplifying it.
He had lucid moments between the fever and the confusion, and used them to say what needed to be said.
Lucid dreaming is the rare state of being asleep and knowing it — clarity within unreality.
Synonyms
clear, coherent, intelligible, transparent, pellucid
Antonyms
confused, opaque, muddled, obscure
Related words
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Ordered Wooden Structure

An adult methodically arranges interlocking wooden pieces into a clear, bright, and highly ordered geometric structure.
The methodical arrangement and clarity of the resulting structure illustrate the word's meaning: clarity of thought and expression that is easy to understand without confusion.
Image credit: Wordspun · AI-generated conceptual illustration