Antonyms of adv rationally

1 sense of rationally

Sense 1
rationally -- (in a rational manner; "we must act rationally")
       Antonym of irrationally (Sense 1)
      => irrationally -- (in an irrational manner; "they acted irrationally")

Synonyms of adv rationally

1 sense of rationally

Sense 1
rationally -- (in a rational manner; "we must act rationally")