on ice (?.)

• ascertained
• assured
• attested
• certified
• cooked-up
• cut out
• cut-and-dried
• cut-and-dry
• decided
• determinate
• determined
• established
• fixed
• guaranteed
• in the bag
• made sure
• nailed down
• open-and-shut
• packed
• planned
• plotted
• prearranged
• preconcerted
• precontrived
• premeditated
• preordered
• proved
• put-up
• rigged
• schemed
• secure
• set
• set-up
• settled
• stacked
• stated
• tested
• tried
• warranted