trial and error
[noun]
Synonyms: experiment, experimentation, test, trial, trial run

[TahlilGaran] English Synonym Dictionary ▲

trial and error noun
a way of achieving an aim or solving a problem by trying a number of different methods and learning from the mistakes that you make:
There's no instant way of finding a cure - it's just a process of trial and error.

[TahlilGaran] Advanced Learner's Dictionary ▲

trial and error
a way of solving a problem by trying different possible solutions until you find one that works
We worked by trial and error until we found a solution to the parking problems at our apartment building.

[TahlilGaran] English Idioms Dictionary ▲

trial and error
n. A way of solving problems by trying different possible solutions until you find one that works.
John found the short circuit by trial and error.
The only way Tom could solve the algebra problem was by the method of trial and error.

[TahlilGaran] English Idioms Dictionary ▲