what sort of; what kind of; in what way
A somewhat formal or literary adjectival noun used to ask about the nature, type, or manner of something. Often interchangeable with どのような or どんな, but いかよう carries a more classical or written tone.
What sort of business do you have?
It's an expression that can be interpreted in any way.
Usually written in kana; the kanji form 如何様 is rare and may be confused with other readings.
Rare kanji spelling; learners should prefer the kana form.
Derived from the classical Japanese interrogative いか (how) + よう (form, appearance). The kanji 如何 are ateji for the reading いか.