square
Preserved but no longer current.
Honest; "on the SQUARE," i.e., fair and strictly honest; "to turn SQUARE," to reform, and get one’s living in an honest manner,—the opposite of "cross." The expression is, in all probability, derived from the well-known masonic emblem the SQUARE, the symbol of evenness and rectitude.
Era: ca. 1874 (Victorian)
Sources & notes
Historical definition reproduced from Hotten’s The Slang Dictionary (1874, public domain; Project Gutenberg #42108, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “square” mean?
Honest; "on the SQUARE," i.e., fair and strictly honest; "to turn SQUARE," to reform, and get one’s living in an honest manner,—the opposite of "cross." The expression is, in all probability, derived from the well-known masonic emblem the SQUARE, the symbol of evenness and rectitude.
Is “square” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.