rationally(in a rational manner) adverb [UK: ˈræʃ.n̩.əl.i] [US: ˈræʃ.n̩.əl.i]People don't always behave rationally. = Las personas no siempre actúan racionalmente.
irracionalmenteadverb
irrationally(in an irrational manner) adverb [UK: ɪ.ˈræ.ʃə.nə.li] [US: ɪ.ˈræ.ʃə.nə.li]