こんなthis sort of; this kind of; like this; such
Pre-noun adjectival
こんなにso; like this; in this way; this much; to this extent
Adverb
困難difficulty; hardship; trouble; distress; infeasibility; inability (to carry out)
Noun
こんなんsuch a thing; something like this
Noun
こんな風にin this way; like this
Adverb
困難を極めるto be extremely difficult; to present a major challenge
Expression