I know WK introduces some less than common vocab to drill kanji and am wondering if the phrase?/word? 悪因悪果 is common place or not? I love it!! If not, what would be a more common way to express that sentiment (an eye for an eye makes the whole world blind type thing)?
It’s a yojijukugo, a four character idiomatic expression. As a category of words they are not used in conversation all that much, but Japanese people know plenty of them. Whether that one in particular is well known, I can’t say.
Edit: this site rates it 0/3 for spoken language and 1/3 for written language, so I’d say it’s not a common one.
Edit 2: according to that same site, one with a similar meaning and more popularity is 因果応報
Ahh, thank you so much! I’ll be using that resource in the future. Much appreciated!!