by trial and error


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by trial and error

Describing a method by which attempts are made to achieve some goal, and then adjustments are made based on any mistakes or failures, followed by further attempts and adjustments until the goal is achieved. Rather than doing things by trial and error, you should really read the manual before trying to fix your engine.
See also: and, by, error, trial

by ˌtrial and ˈerror

trying different ways of doing something until you find the right one: I didn’t know how to use the camera at first, so I had to learn by trial and error.
See also: and, by, error, trial