from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Absolutely clear; pellucid: a crystal clear sky; gave me crystal clear directions.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Completely clear and understood.
  • adj. Visually clear, a sharp image, high acuity.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. (of language) transparently clear; easily understandable
  • adj. transmitting light; able to be seen through with clarity


Emphatic form of clear in visual and metaphorical “understandable” senses. Compare clear as a bell ("very clear (of sound)"). (Wiktionary)


  • She is obviously not the twin depicted in Mistaken Identity — that much must be crystal clear — but it should come as no surprise that authors often cannibalize their own lives for the truth that makes fiction.


  • In May of 2007, Steven Anderson decided it was time to become crystal clear about the kind of person he wanted—and intended—to attract into his life.

    The Vision Board Book

  • The mosaic law of the baseball universe, created when Harry Frazee put Broadway before baseball and The Babe, was crystal clear to all.

    One Season

  • That is Commodore Bainimarama's way of referring to the fact that we made it absolutely crystal clear to Fiji that the appointment of judges to Fiji, after the abrogation of the constitution, would see those judges subject to the travel bans as if they were members of the regime.

    Press conference

  • I sat down at the little kitchen table—round glass with brass-limbed chairs, all close to the kitchen window, with its crystal clear surface and two tiers of heavy gauze curtains in almond brown.

    Finding Dignity

  • But Quebec under a white cloak is a place set high in air, crystal clear and full of sunshine.

    Canadian Cities of Romance

  • Because it was crystal clear that as the universe stood now, on July 25,1887, John McCully would be hung as a horse thief.

    Moon Shadow

  • In the east is Mount Benefice, named because of the crystal clear water which cascades down from that high peak and waters our valley.

    Father Swarat

  • And if Holis was strong enough to stand up to him in public, Edoran would make it crystal clear to every shareholder who was part of those negotiations that if Weasel died they would die too, on the day of his twenty-second birthday.

    Crown of Earth


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