ENGLISH
REFERENCE

lucid

adj.
C1 Advanced Oxford US //ˈɫusəd// UK //lˈuːsɪd// lu·cid

adj. 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.

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


SIMPLE

She gives a lucid explanation of the difficult theory.

CONTEXTUAL

The professor provided a lucid summary of the legal reforms that helped even the novice students grasp the core concepts.

COMPLEX

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.

Synonyms
Origin

Latin lucidus, from lūceō (“shine”) + -idus.

© 2026 English Reference