What does "irrationally" mean?

In an irrational manner; without reason; in a manner contrary to reason

What is a synonym for "irrationally"?

Common synonyms include: absurdly, fanatically, fault, idiotically, illogically, madly.

adv

adv ·5 syllables ·Rare ·Advanced level

Adverb

Adverb

"We sometimes behave irrationally when we are in love."

From irrational + -ly.