Adjective:
justa, sólo, derecho, razonable, legítimo, equitativo, sonar, mesurado, moderar, modesto, bueno, adecuado, palmadita, igual, conveniente, prudente, apropiado, condigno, digno, devenir, ajuste, establecido, válido, vertical, razonada, fondo, motivado, lógico.
Well, that's REASONABLE.
Very REASONABLE people.
I'm sure he's got a perfectly REASONABLE explanation for where he got it.
Amy had a fight; I was being perfectly REASONABLE.
I just gave you a REASONABLE explanation.