regardless of (whatever … is)
irrespective of (whatever … is)
Structure
- Noun + (の) + いかん + に関わらず
- Noun + (の) + いかん + によらず
- Noun + (の) + いかん + を問わず
いかん is a formal, written expression meaning “how"/ “in what way”
[Aのいかんにかかわらず・によらず・を問わずB means that regardless of (whatever) A (is), B is the case]
[It is used to express that A is not taken into account]
[A fairly rare, formal expression. Generally used with nouns like 結果 or 理由]
硬い