What it means
Means something's honest, open, and not doing little rat moves off to the side. If a deal is above board, everything's out in the light, properly declared, nothing tucked under the table. You'd say it when money, plans, or paperwork are all clean and nobody's trying to get cute.
Usage examples
"Before we sign, I want it all above board, yeah? No cash-in-hand, no side letters, just proper invoices and everything in writing."
"I checked the contract twice and it is all above board, no hidden fees and the deposit comes straight back."
"If this deal were properly above board, they wouldn’t be so jumpy about putting the terms in writing."
"Relax, it's all above board now, payroll, taxes, the lot. No more cash slipped in an envelope."
"If they want me in on it, it needs to be above board from day one. I'm not babysitting anyone's dodgy side hustle."
Where it comes from
It comes from card-table talk. Back in older English, the board meant the gaming table, and if your hands stayed above it, nobody could accuse you of palming cards or pulling sly nonsense. That clean visible image spread beyond gambling, so an above-board deal became one done openly and honestly.
