'irrationally' definitions:
Definition of 'irrationally'
From: WordNet
adverb
In an irrational manner; "they acted irrationally" [ant: rationally]
Definition of 'irrationally'
From: GCIDE
- irrationally \ir*ra"tion*al*ly\, adv. In an irrational manner. --Boyle. [1913 Webster]