trial-and-error

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. trying out various means or theories until error is satisfactorily reduced or eliminated
- he argued that all learning is a trial-and-error process that resembles biological evolution
• Similar to:
empirical, empiric
2. relating to solving problems by experience rather than theory
- they adopted a trial-and-error procedure
• Similar to:
heuristic