transparent

You can see right through something transparent. A window is transparent — unless it's really, really dirty. Time to break out some soap!

Obviously the glass of a window is transparent, but transparent can also describe something that is clearly understood and lacks any deception or secrecy. Reporters use it these days to describe the ideal way for government to develop policy, where voters can see the process and how decisions are achieved. Some in government, however, would argue that the leaking of top-secret information takes transparency a step too far.

Definitions of transparent
  1. adjective
    transmitting light; able to be seen through with clarity
    transparent crystal”
    synonyms: crystal clear, crystalline, limpid, lucid, pellucid
    clear
    allowing light to pass through
  2. adjective
    so thin as to transmit light
    transparent chiffon”
    synonyms: cobwebby, diaphanous, filmy, gauze-like, gauzy, gossamer, see-through, sheer, vaporous, vapourous
    thin
    of relatively small extent from one surface to the opposite or in cross section
  3. adjective
    easily understood or seen through (because of a lack of subtlety)
    “a transparent explanation”
    “a transparent lie”
    Synonyms:
    obvious
    easily perceived by the senses or grasped by the mind
  4. adjective
    free of deceit
    synonyms: guileless
    square, straight
    characterized by honesty and fairness
Word Family