1. having four equal sides and four right angles; square in shape
2. firm, solid, and direct; straightforward and honest

1. in a direct, firm, or straightforward manner

Examples

• The building has a foursquare design with equal sides and right angles.
• She gave a foursquare answer to the difficult question without hesitation.
• He stood foursquare against the proposal and explained his reasons clearly.
• The foursquare tower dominated the town's skyline.
• They faced the challenge foursquare, refusing to back down.
• His foursquare approach to business earned him respect from colleagues.