plain as day

ADJECTIVE

evident

Synonyms

STRONGEST

conspicuous indisputable noticeable obvious palpable unmistakable visible

WEAK

axiomatic barefaced clear-cut crystal clear distinct fact incontestable incontrovertible logical manifest open and shut patent perceptible plain reasonable straightforward tangible unambiguous

Antonyms

STRONGEST

concealed doubtful dubious hidden inconspicuous indefinite obscure questionable uncertain unclear unnoticeable unsure vague

WEAK

disputable mistakable secret unknown

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.

This should be plain as day to anyone who cares to look and listen.

From Slate • Jan. 20, 2026

Baker pushes the comedy, but, just as with Ani, the injustice of it all is plain as day.

From Los Angeles Times • Oct. 16, 2024

And the messages, once they were deciphered, were as plain as day.

From Scientific American • Oct. 12, 2023

“They made it plain as day why they were there,” Mulroe said.

From Washington Post • Apr. 24, 2023

“She was just making an excuse to spend time with him,” he said as if it were plain as day.

From "The Name of the Wind" by Patrick Rothfuss