# lucid

/ˈɫusəd/ (US) · /lˈuːsɪd/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/lucid
Updated: 2026-04-24

## Definition

expressing ideas in a way that is very clear and easy to understand. It can also describe a person who is thinking clearly after being confused or sick.

For teachers: characterized by clear, intelligible expression or logical consistency; also used to describe a patient’s return to a normal state of consciousness. Adjective.

## Examples

- She gives a lucid explanation of the difficult theory.
- The professor provided a lucid summary of the legal reforms that helped even the novice students grasp the core concepts.
- The elderly man had several lucid moments during the afternoon, during which he was able to recognize his children and discuss his medical wishes with the doctor.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.