Reasonable/ˈriːznəbl/ Definition 1 of 6Pro Tip 1/3Expectation Context Used when judging if actions or results are suitable for a situation. Simon made a reasonable attempt at solving the problem. Pro Tip 2/3Justifiable Qualification Describe conditions or assumptions that are sensible and likely to be accepted. It's reasonable to assume she'll arrive by 9 am given the traffic. Pro Tip 3/3Not Arbitrary Shows decisions or opinions are based on good reasons, not random choice. The jury must have a reasonable doubt to not convict.