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Definitions

crystal clear

[kris-tl-kleer] / ˈkrɪs tlˈklɪər /
ADJECTIVE
obvious
Synonyms
WEAK
apparent clear clear-cut comprehensible evident glaring lucid noticeable perspicuous plain transparent understandable understood
ADJECTIVE
transparent
Synonyms
WEAK
clean clear crystalline limpid lucid pellucid sparkling translucent
crystal-clear
ADJECTIVE
limpid
Synonyms
WEAK
bright comprehensible crystalline definite distinct filmy intelligible lucid luculent obvious pellucid perspicuous pure see-through thin translucent transparent transpicuous unambiguous
Antonyms
WEAK
incomprehensible muddy obscure unintelligible vague
ADJECTIVE
perspicuous
Synonyms
WEAK
apparent clear-cut comprehensible crystal distinct easily understood explicit intelligible limpid lucent lucid luminous pellucid plain self-evident straightforward transparent unambiguous unblurred understandable
Antonyms
WEAK
obscure unclear vague
ADJECTIVE
see-through
Synonyms
STRONGEST
gauzy sheer translucent
WEAK
cellophane clear crystal clear crystalline diaphanous filmy glassy gossamer hyaline limpid lucent lucid pellucid permeable plain thin tiffany transpicuous vitreous
Antonyms
STRONGEST
cloudy heavy opaque thick
ADJECTIVE
transparent
Synonyms
STRONGEST
clear thin translucent
WEAK
cellophane crystalline diaphanous filmy gauzy glassy gossamer hyaline limpid lucent lucid pellucid permeable plain sheer tiffany transpicuous vitreous
Antonyms
STRONGEST
blocked cloudy
WEAK
dark opaque questionable unclear unintelligible vague

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I waded into the crystal-clear water, and felt a strong current pull me.

From The Wall Street Journal • Oct. 25, 2025

But he still speaks in the crystal-clear, melodious Arabic of one who studied literature, and recited the Quran daily as the imam of a local mosque.

From BBC • Oct. 18, 2025

In the crystal-clear waters of Kaneohe Bay, a U.S.

From New York Times • Dec. 1, 2023

The legendary rock band, which has won 22 Grammys, performed for two hours inside the massive, state-of-the-art spherical venue with crystal-clear audio.

From Seattle Times • Sep. 30, 2023

Thorn pointed ahead, and there, through the now open path, was a lagoon, shining with beautiful crystal-clear waters and what looked like hundreds of blue lightning bugs.

From "Witchlings" by Claribel A. Ortega