1. in a way that involves risk, uncertainty, or lack of planning; by chance or luck rather than by design
Usage: informal; often implies a precarious or uncertain manner

Examples

• He chancily navigated the narrow mountain road without proper equipment.
• The business was run chancily, with little regard for financial planning.
• She chancily agreed to the deal without reading the contract.
• They chancily relied on luck rather than strategy to win the game.
• The project proceeded chancily, with decisions made on the fly.
• He chancily invested all his savings in a startup with no business plan.