Asks about manner or method; somewhat formal and often used in writing or careful speech.
I am thinking about how we should solve this problem.
Used with adjectives or verbs to ask about degree; often in rhetorical or emphatic expressions.
I can't put into words how deeply his words touched me.
Used in the pattern いかに...も or いかに...でも to mean 'no matter how much'; formal and often literary.
No matter how hard you try, sometimes you don't get results.
hey; oi
Archaic interjection used to call attention; not used in modern Japanese.
In old tales, there are scenes where someone calls out 'hey!' using いかに.
He constantly thought about how he should live his life.
This incident shows just how dangerous it is.
No matter how hard I tried, the result didn't change.