Antonyms of adv irrationally

1 sense of irrationally

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

Synonyms of adv irrationally

1 sense of irrationally

Sense 1
irrationally -- (in an irrational manner; "they acted irrationally")