rea·son·able adj
1 a: being in accordance with reason, fairness, duty, or prudence
b: of an appropriate degree or kind
c: supported or justified by fact or circumstance
a reasonable belief that force was necessary for self-defense
2: applying reason or logic; broadly: rational (1)
a reasonable mind
rea·son·able·ness n
rea·son·ably adv
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.