leave nothing to chance
- meticulousShowing extreme attention to detail
- calculatedFigured out mathematically
- preparedMade ready beforehand
- thoroughComplete in every detail
- preciseExactly correct, no error
foolproof · airtight · systematic · deliberate · controlled · rehearsed · backup · contingency · safeguard · insurance · planning · detail · clockwork · certainty · vigilant · cautious · methodical · failsafe
planning and control
leave nothing to chancewing it
Act without preparation
play it by ear · go with the flow · improvise · fly by the seat of one's pants · let the chips fall where they may
risk tolerance
leave nothing to chanceroll the dice
Accept uncertain outcome
risk it · bet on it · tempt fate · play the odds · take a flyer