Bad Precedent
Noun
あくれい
日本語を学ぶ時には、いい例だけでなく、悪例を学ぶことも必要です。
When learning Japanese, it is necessary to learn from good examples as well as bad examples.
コウイチは悪例のかたまりだ。
Koichi is a cluster of bad examples.
僕の両親は、今後の寝る時間に悪例を残すことになるからって、絶対に夜更かしさせてくれないんだ。
My parents never let me stay up late because they believed it would set a bad precedent for future bedtimes.
A bad example is a bad example and is something you don't want.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.