1 well-balanced, sane, sound, normal, reasonable, reasoning, logical, ratiocinative, clear-headed, clear-eyed, sober; of sound mind, Colloq all there:
Desmond is a rational human being who would be able to advise you about your problem.
2 discriminating, intelligent, thinking, enlightened, prudent, wise, knowledgeable, informed:
We could not have elected a more rational representative for our cause than Robert Brown.
3 sensible, common-sense, commonsensical, practical, pragmatic, down-to-earth, everyday, acceptable, reasonable, logical:
Philippa thinks she has a rational explanation for the strange light we saw in the sky last night.
It all seemed quite rational to me.
highly, very | entirely, fully, perfectly, quite
At the time she was perfectly rational.
| purely, strictly | essentially
Humans are essentially rational beings.
| apparently | economically
With children working from the age of ten, large families were economically rational.
Try to be rational about it. Latest queries: italian, region, clarify, element, consult, biased, plus, better, conduct, submit, intermediate, refine, trigger, PEPPER, percent, regime, extrovert, individual, equip, rational,