crystal clear

be crystal clear

1. Of a thing or image, to be strikingly clear or clean. The picture on this new high-definition TV is crystal clear! The skies at the top of the mountain were just crystal clear.
2. Of information or communication, to be very easy to understand and not vague or ambiguous. A: "You have to drop this package off by 5 PM sharp, or it won't get delivered. Is that clear?" B: "Yep, it's crystal clear." A good lecturer is crystal-clear in class, but a great one makes the lessons engaging too.
See also: clear, crystal

crystal clear

1. Of a thing or image, strikingly clear or clean. Sometimes hyphenated when used as a modifier before a noun. The picture on this new high-definition TV is crystal clear! The crystal-clear skies at the top of the mountain afforded a spectacular view of the whole state down below.
2. Of information or communication, very easy to understand; not vague or ambiguous. Sometimes hyphenated when used as a modifier before a noun. A: "You have to drop this package off by 5 PM sharp, or it won't get delivered. Is that clear?" B: "Crystal clear." A good lecturer provides crystal-clear lessons in class, but a great one makes them engaging.
See also: clear, crystal
Farlex Dictionary of Idioms.

crystal clear

1 completely transparent and unclouded. 2 unambiguous; easily understood.
See also: clear, crystal
Farlex Partner Idioms Dictionary

ˌcrystal ˈclear

very easy to understand; completely obvious: After Anne was late for the third time in a week, her boss made it crystal clear that it must not happen again. OPPOSITE: (as) clear as mud
See also: clear, crystal
Farlex Partner Idioms Dictionary

crystal clear

Transparently obvious. This simile (clear as crystal) dates from biblical times. In the Book of Revelation the writer describes the great city of Jerusalem as “having the glory of God; and her light was like unto a stone most precious, even like a jasper stone, clear as crystal” (21:11). The term appealed to numerous medieval poets and crops up in their ballads. By the time Dickens (in Edwin Drood, 1870) and Arthur Conan Doyle (in The Resident Patient, 1893) used it, it was a cliché.
See also: clear, crystal
The Dictionary of Clichés by Christine Ammer
See also:
  • be crystal clear
  • crystal clear, be
  • clear (something) with (someone)
  • clear with
  • clear from some place
  • clear (something) from (something)
  • (as) clear as vodka
  • as clear as vodka
  • clear as vodka
  • vodka
References in periodicals archive
That one of the editors of Crystal Clear is the daughter of William Lawrence and Alice Bragg sounds even more the alarms of possible bias.
A.M. Glazer and Patience Thomson, eds. Ciystal Clear: The Autobiographies of Sir Lawrence & Lady Bragg
Sikaflex Crystal Clear is available through Sika Canada's authorised network of distributors and in select hardware and home improvement stores.
Sikaflex Crystal Clear launched
In addition to partnering with Elan, Crystal Clear Payments offers several niche services, such as "Fraud Moxie," Crystal Clear's fraud detection system, and "Crystal Clear Pure Rewards" which allows financial institutions to completely customise their own rewards programs.
Crystal Clear Payments, Elan Financial Services forge alliance
The crystal clear aluminum finish appears different from the "golden" options posted by the tipster previously.
Samsung Galaxy S5 Prime/Galaxy F Crystal Clear Confirmed Release on September 12 with More Killer Features
The Mini Taj W186 feature phone has a 1.8 inch crystal clear display.
Wham! Mobiles launches a new range of Taj Mahal phones
So when George Osborne stands up next week and announces his cuts in day to day spending, we won't be able to promise now to reverse them because we can only do so when we can be absolutely crystal clear about where the money is coming from."
Tory cuts to stay, Miliband will say
The Duchess had Crystal Clear Oxygen treatments, which are PS75 for an hour.
Q & A
Crystal Clear Polish (PS32, www.crystalclear.co.uk) is a microdermabrasion treatment you can do at home that will remove dead skin cells and encourage cell renewal, reviving your complexion.
Ask Danielle
"My 'then' friend and 'now' foe, Husain Haqqani must mind it that upon my arrival to Pakistan everything would become crystal clear, adding he would have nowhere to run", The News quoted him, as saying.
My arrival in Pakistan will tighten noose around Haqqani neck over 'memo' issue: Ijaz
Gift and tabletop manufacturers like Crystal Clear are responding to the tough economy by playing up promotional and volume items.
Gift wrap-up
After founding and selling two salons, she launched Crystal Clear to sell micro-dermabrasion anti-ageing skincare treatments.
Anti-ageing skincare entrepreneur receives Duke's medal at palace; In association with Rensburg Sheppards
It is a versatile, crystal clear urethane coating that adheres to metal, plastic and most other surfaces.
Techspray introduces Licron Crystal
FORGET needles and surgery, now you can rejuvenate the eyes with just the touch of the Crystal Clear eye pen.
Family Life: Style file; Fashion PLUS Beauty
The new Evone bottles are lightweight and crystal clear. They are available immediately by the case or by the truckload.
McKernan introduces Evone bottles
They look more like new age art than speakers, but they sound crystal clear and can wake up the RA who lives three floors up at the other end of the building.
Dorm days: stylish survival tools for campus life