| rational | adj 1. of, having, based on reasoning, rasional: a ~ analysis of the problem, analisis rasional masalah itu; a ~ being, manusia yg rasional; 2. sane, waras: the patient has ~ periods, pesakit itu ada masa-masa warasnya; 3. (math) nisbah. | Kamus Inggeris-Melayu Dewan |
| irrational | adj 1. (of person, behaviour) lacking or not showing usual powers of reason, coherence, tdk rasional: he behaved in an ~ manner after taking the drug, dia berkelakuan tdk rasional selepas memakan ubat itu; her delirium caused her to become ~, keadaan delirium menyebabkan dia menjadi tdk rasional; 2. not in accordance with reason, illogical, tdk /rasional, munasabah, masuk akal/: an ~ statement, kenyataan yg tdk rasional; such fears are quite ~, perasaan takut begitu agak tdk munasabah; 3. (math) tak nisbah: ~ numbers, nombor tak nisbah. | Kamus Inggeris-Melayu Dewan |
| rationalize, rationalise | vt 1. explain on rational grounds, memberi rasional thdp: it’s impossible to ~ faith, tdk mungkin utk memberi rasional thdp kepercayaan; 2. make a business etc more efficient, merasionalkan: the need to ~ the rural industries, keperluan utk merasionalkan industri-industri luar bandar. | Kamus Inggeris-Melayu Dewan |
| rationalization, rationalisation | n 1. giving of a rational explanation, memberi rasional, rasionalisasi; 2. organization of a business etc to obtain efficiency, perasionalan. | Kamus Inggeris-Melayu Dewan |