Idiom Definition:
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"to be plain as day"
to be very clear or obvious
Synonyms:
axiomatic, clear, clear-cut, conspicuous, distinct, fact, incontestable, incontrovertible, indisputable, logical, manifest, noticeable, obvious, open-and-shut, palpable, patent, perceptible, plain, reasonable, straightforward, tangible, unambiguous, unmistakable, visible
This picture is literally and idiomatically becoming as
plain as day. - - - - ->