Translation guide
How to express the idea of being reasonable, sensible, or fair in Japanese, depending on whether you mean acting rationally, making a fair request, or expecting something realistic.
Telling someone to be reasonable, think logically, or not be emotional.
Literally 'become calm'. A common way to ask someone to be reasonable by calming down and thinking clearly.
Be reasonable and think it over again.
Literally 'become rational'. More formal and direct, used when appealing to someone's reason.
Please be reasonable and don't get emotional.
Means 'calm down'. Often used when someone is upset and you want them to be reasonable.
Be reasonable and listen to what I have to say.
Asking someone to be reasonable in their demands, price, or expectations.
Literally 'don't say unreasonable things'. Used when someone is asking too much.
Be reasonable. I can't do that.
Means 'think with common sense'. Implies the request should be within normal bounds.
Means 'within a reasonable range'. Often used in negotiations.
Please be reasonable (in your offer).
Telling someone to have realistic expectations, not to expect too much.
There is no single Japanese word that directly translates 'be reasonable' in all contexts. The phrase '合理的であれ' (ごうりてきであれ) is a literal translation but sounds unnatural and overly formal. Use the expressions above based on the situation.
Be reasonable; that price is way too high.
Be realistic; that's impossible.