Meaning of on the square in English:
on the square
phrase
1informal Honest; straightforward.
- ‘I'm not going to throw you over. I've always been on the square with you.’
honest, frank, candid, open, truthful, sincere, on the level, honest-to-goodness
2Having membership of the Freemasons.
- ‘How many local councils are riddled with freemasonry? At how many appointments are the best men…passed over because they are not on the square?’